OPINION

delivered the opinion of the Court

In October 2002 appellant was convicted of capital murder for intentionally and knowingly causing the deaths of Esteban Herrera and Nilda Tirado in the same criminal transaction. ^[1] Pursuant to the jury’s answers to the special issues set forth in Texas Code of Criminal Procedure Article 37.071, Sections 2(b) and 2(e), the trial court sentenced appellant to death. Direct appeal to this Court is automatic. ^[2] Appellant raises eight points of error. We will affirm.

FACTS

In March and April, 1999, appellant committed a series of bank robberies in Houston, Texas. He purportedly planned to use the proceeds of the robberies to go into business with his friend, Esteban (“Steve”) Herrera. Appellant’s plan never came to fruition, however, because Steve Herrera and his family were murdered in their home in Houston in the early morning hours of April 24,1999. Appellant was the last person seen with Steve at his house prior to the murders.

Steve Herrera’s brother, Edward, testified that he and Steve both sold drugs, and he often supplied Steve with drugs. A week before the murders, Edward went to the house that Steve shared with his girlfriend, Nilda Tirado, and their three children. Edward, Steve, and appellant played pool and drank beer in Steve’s garage that night. When Steve went inside the house, appellant told Edward that he and Steve planned to open a bar together. Edward testified that Steve never told him that he had any plans to go into business with appellant.

Edward saw appellant at Steve’s house again on the evening of April 21. They-played pool in the garage, and Steve went inside the house at one point. While Steve was inside, Edward saw appellant take a large amount of money out of his own wallet and count it.

On April 23, Steve paged Edward at 9:00 p.m. and 11:00 p.m. When Edward returned his pages, Steve asked if Edward could get him some cocaine. Steve called Edward from appellant’s cell phone at 2:00 or 2:30 a.m. and said he was on his way home. Edward received pages again at 3:00 and 4:00 a.m. He spent the night at a friend’s house that night, and he did not learn what happened to Steve and his family until the next morning.

Steve’s brother-in-law, Victor Martinez, testified that he went to Steve’s house in his white Ford Escort shortly after 10:00 p.m. on April 23. When he arrived, the garage door was raised and Steve and appellant were drinking beer and playing pool in the garage. Sometime around midnight, Nilda opened the door and called to Steve. He walked over to her and they[*727] exchanged a few words and a kiss, then she went back inside and the men continued playing pool. During the course of the evening, Victor Martinez heard Steve and appellant talk about trying to get some cocaine from Edward.

They decided to go to a nightclub, Rick’s Cabaret, at 12:30 a.m., so Steve lowered the garage door, and the three men left in Martinez’s car. They arrived at around 1:00 a.m. and left sometime after 2:00 a.m. It took them about fifteen or twenty minutes to drive back to Steve’s house. On the way home, Steve used appellant’s phone to page Edward. When they returned, they talked in front of the house while Steve and appellant smoked marijuana, then Steve and appellant went inside the garage, and Martinez drove home. Martinez testified that when he left, the garage door was raised and Steve and appellant were playing pool. Martinez arrived home at about 3:30 a.m. and went directly to bed. He testified that he never saw appellant enter Steve’s house that evening.

Gregory Francisco, who lived across the street from Steve Herrera, testified that he saw Steve in his driveway with two of his children at 4:30 or 5:00 p.m. on April 23. At 9:00 or 9:30 p.m., he noticed that Steve’s garage door was lowered to shoulder-level and that there were people inside the garage listening to music. Some vehicles were parked in front of the house, including a white car that looked like a Ford Escort. He went to bed at about 12:30 a.m. When he went outside at approximately 6:00 a.m. the next morning, Steve’s garage door was lowered and he saw smoke and heard loud music coming from the house. No one answered the front door when Francisco and his wife rang the doorbell, so they tried to enter the house through the side door to the garage. The door was hot, and there was smoke coming out from under it. Francisco kicked the door open and saw Steve lying face-down in a pool of blood inside the garage, so he told his wife to call 911. Firefighters arrived shortly thereafter and found Nilda’s badly burned body on a couch in the living room. The fire was confined to the couch area and was merely smoldering at the time, but the house was filled with smoke. Firefighters also discovered the bodies of Steve’s seven-year-old daughter, Valerie Herrera, and Nilda’s seven-year-old daughter, Rachel Elizabeth Cumpian, in one bedroom, and the body of Steve and Nilda’s twenty-two-month-old daughter, Jade Herrera, in the master bedroom. The children’s bodies were covered in soot, and they appeared to have died from smoke asphyxiation.

Investigator Marshall J. Kramer testified that flammable liquids were used to deliberately set the fire in the living room. A burned red plastic gasoline container, an aerosol can, and a roll of paper towels soaked in a flammable liquid were on the living room floor, and a burned one-gallon metal can was on the couch next to Nilda’s body. The metal can contained Kutzit, an extremely flammable liquid that is normally used to dissolve tile glue. Other cans of Kutzit were found in lockers inside the garage and in a storage shed behind the house. Nilda was lying face-down on the couch, and there was blood around her head. Her body was “charred from the exterior.” Kutzit or gasoline had been poured on her body and the couch. Police found a spent bullet under the carpet where the couch was located. There were no signs of forced entry, and Steve had a wallet in his back pocket that contained approximately $900.

The medical examiner who performed the autopsies testified that the three children died from inhaling toxic levels of soot and carbon monoxide. Steve’s death was[*728] caused by a penetrating gunshot wound to the back of his neck which severed the connection between his brain and spinal cord. The stippling around the wound indicated that the gun was fired within eighteen inches of his body. There was no exit wound and the bullet was recovered from his body. Nilda died from a perforating gunshot wound to her neck that severed her spinal cord. The bullet entered her neck on the back right side and exited the front left side. She suffered severe burns along the entire back side of her body that were consistent with a flammable substance being poured on her body and set afire after she had been shot. Sperm cells were found on oral, vaginal, and anal swabs taken during a forensic exam of her body. Steve’s DNA was consistent with the DNA on the vaginal and anal swabs. Appellant’s DNA was consistent with the-DNA on the oral swab.

Appellant gave two written statements to police. In his first written statement, he said Steve picked him up at 8:00 or 9:00 p.m. on April 23, and they went over to Steve’s house to play pool and drink beer in the garage. Martinez joined them at about 11:00 p.m. They later went to Rick’s Cabaret in Martinez’s car and stayed until 2:00 a.m. Martinez drove them back to Steve’s house, where they again played pool and drank beer, and Martinez left twenty or thirty minutes later. At some point, Nilda opened the door leading into the garage and gave Steve “a look,” so appellant “knew it was time to leave.” Steve drove him home in his black Honda Prelude at 4:00 a.m., and he went straight to bed.

Appellant later changed his story when a detective asked him what he would do if his semen was found in or on Nilda’s body. In his second written statement, he added that he had been having an affair with Nilda. He said that he went inside the house at one point during the evening while Steve remained in the garage. He and Nilda went into a bathroom, and he bent her over the sink and began having sex with her. They stopped because they mistakenly thought they heard Steve enter the house. Then Nilda began “sucking [his] dick and jacking [him] off,” and he did not remember “if [he] came or not.” He went back into the garage afterwards and told Steve to take him home. He claimed that he and Nilda had only “messed around” and kissed on prior occasions, and that night was the first time they had sex. He said he had never told anyone about their affair because it would ruin Nilda’s reputation.

Police searched the home where appellant lived with his parents and found guns, boxes of ammunition, and receipts for guns and ammunition. Police also found a semiautomatic-pistol magazine that did not fit any of the weapons that were recovered. Firearms examiner Matthew Clements examined the spent bullet found in the living room and the bullet recovered from Steve’s body and concluded that they were fired from the same weapon. Clements testified that the magazine recovered from appellant’s home was identical in design to a magazine for a nine-millimeter Ruger P85 pistol. ^[3]

In May 1999, shortly after the murders of Steve Herrera and Nilda Tirado, appellant confessed to committing March and April bank robberies, and he was convicted in federal court in September 1999. Michael Beckcom, a fellow inmate at the fed[*729] eral prison in Beaumont, testified against appellant at trial. Beckcom testified that appellant told him that he committed the murders. Appellant explained to Beckcom that he killed Steve because he “took $250,000 of [his] hard-earned money.” ^[4] He said that he and Steve argued about the money in the “pool room,” and that he thought Steve was going to kill him, so he shot him in the back of the head. Nilda came into the garage during the argument and ran inside the house to call the police. He shot Nilda in the back of the head and she fell face down onto the couch. He looked for the money inside the house and could not find it. He stated that he set the fire to cover his tracks, and that the children were in bed and died from smoke inhalation. He bragged to Beckcom, “Anybody that can go into a house and take out a whole family and get out without being seen is a bad mother fucker, and I’m that mother fucker.”

Beckcom testified that appellant told him that the police had DNA evidence, but Steve and Nilda had an open relationship, and it was common knowledge that he and Nilda were having an affair. He said police were looking for a .88 caliber pistol, but that gun was not the murder weapon, and it was “clean” because he had sold it to “some girl.” He also stated that police found two drops on his shoe that looked like blood but were actually catsup.

Angela Serna Alvarez and Cynthia Garcia Flores, two of Nilda’s closest friends, testified that they had no knowledge of the alleged affair. Moreover, Ms. Alvarez testified that Nilda once told her that she did not like appellant and that he gave her “the creeps.” Ms. Flores also testified that Nilda once told her that she was tired of appellant being at her house and that he gave her “the creeps.” Vincent Flores, Cynthia’s husband, testified that he did not believe that Steve and Nilda had an open relationship, and he said that Steve once got angry at him for “putting a move” on Nilda.

During the defense case-in-chief, appellant’s mother, Sandra Prible, testified that she met Beckcom while visiting appellant at the federal prison, after she had sent appellant a copy of the probable-cause affidavit in his capital-murder case. J. Brent Liedtke, a former attorney and fellow inmate at the federal prison, testified that he saw the copy of the probable cause affidavit when he helped appellant with his case, and he saw appellant show it to other inmates as well. Brian Maurice Fuller, a former federal prison inmate, testified that, in his opinion, Beckcom was opportunistic and untruthful. Christine Bartol-la, appellant’s friend, testified that she bought a .38 Special Taurus revolver from appellant in November 1998 and returned the gun to his father in November 2001. Appellant’s former neighbor, Christina Gurrusquieta, testified that she looked out her window on the night of the murder and saw appellant and Steve talking in appellant’s driveway sometime after 1:00 a.m., then Steve left and appellant went inside the house.

SUFFICIENCY OF THE EVIDENCE

In his sixth point of error, appellant argues that the evidence is legally insufficient to support his conviction for capital murder. In evaluating the legal sufficiency of the evidence, we must view the[*730] evidence in the light most favorable to the verdict and determine whether any rational trier of fact could have found the essential elements of the offense beyond a reasonable doubt. ^[5]

To convict appellant of capital murder, the jury had to find beyond a reasonable doubt that appellant murdered Nilda Tira-do and Steve Herrera by shooting each of them with a firearm during the same criminal transaction. The State presented evidence that: 1) appellant was the last person seen with Steve at the house prior to the murders; 2) he had a motive to kill Steve; 3) the bullets that killed Nilda and Steve were fired from the same weapon; 4) appellant’s sperm was deposited in Nil-da’s mouth at some point prior to her death; 5) a fire was set to destroy physical evidence, including evidence of appellant’s DNA; and 6) appellant admitted to Beck-com that he committed the murders. Appellant argues that Beckcom’s testimony was “questionable” because he testified in the hope of having his own sentence reduced and he “could have learned the details of the alleged offense through the probable cause affidavit in the appellant’s possession.” Beckcom, however, testified about some details that were not contained in the probable cause affidavit. For example, he knew that there was a pool table in the garage and appellant had drops of catsup on his shoe. Beckcom’s testimony also contradicted or excluded some details that were contained in the probable cause affidavit. He testified that appellant told him that Steve “took $250,000 of [his] hard-earned money,” but the amount recited in the probable cause affidavit was $45,000. He knew that the police had DNA evidence and that appellant claimed to have had an affair with Nilda, but he apparently did not know about appellant and Nilda’s alleged sexual encounter in the bathroom while Steve was in the garage. The jury was free to take these discrepancies into account and to believe or disbelieve Beckcom’s testimony based on their evaluation of his credibility.

Appellant asserts that the scientific testimony was “equally questionable” because the medical examiner could not conclusively determine the exact time at which appellant’s semen was deposited in Nilda’s mouth. Appellant claimed that their sexual encounter was consensual, but other evidence supported the State’s theory that the encounter was non-consensual. Only Nilda’s body was set on fire-presumably to cover up evidence of sexual assault-and Nilda’s friends testified that she disliked appellant.

Appellant further contends that is it “inconceivable” that he committed the offense because “[t]here was no evidence of blood, soot, or any combustible materials either on [him] or his clothing.” The evidence showed that the murders took place in the early morning hours of April 24, and the police did not arrive at appellant’s house until approximately 5:00 p.m. that evening. The jury could have rationally concluded that appellant had ample time to dispose of this type of physical evidence.

Based on the evidence at trial, a rational jury could have concluded beyond a reasonable doubt that appellant committed the murders of Nilda Tirado and Steve Herrera during the same criminal transaction. ^[6] Point of error six is overruled.

In his seventh point of error, appellant contends that the evidence is factually insufficient for the same reasons expressed in his sixth point of error. In a factual-sufficiency review, we view all of[*731] the evidence in a neutral light, and we set the verdict aside only if the evidence is so weak that the verdict is clearly wrong and manifestly unjust, or the contrary evidence is so strong that the standard of proof beyond a reasonable doubt could not have been met. ^[7] A clearly wrong and unjust verdict occurs where the jury’s finding is “manifestly unjust,” “shocks the conscience,” or “clearly demonstrates bias.” ^[8]

In this case, the same facts that make the evidence legally sufficient also make it factually sufficient. The evidence supporting the verdict was not so weak as to be clearly wrong and manifestly unjust, nor was the contrary evidence so strong that the standard of proof beyond a reasonable doubt could not have been met. ^[9] Point of error seven is overruled.

EVIDENCE OF THE CHILDREN’S DEATHS

Evidence of the Children’s Deaths and Rule iOi(b)

In his first point of error, appellant argues that the trial court improperly admitted evidence of extraneous offenses under Rule 404(b). Appellant was charged only with causing the deaths of Steve Herrera and Nilda Tirado, but the trial court permitted the State to introduce evidence that their three children also died from smoke inhalation caused by the fire.

A trial court’s ruling on the admissibility of extraneous offenses is reviewed under an abuse of discretion standard. ^[10] As long as the trial court’s ruling was within the “zone of reasonable disagreement,” there is no abuse of discretion, and the trial court’s ruling will be upheld. ^[11]

While evidence of other crimes, wrongs, or acts is not admissible “to prove the character of a person in order to show action in conformity therewith,” it may be admissible for other purposes, such as proof of motive, opportunity, intent, preparation, plan, knowledge, identity, or absence of mistake or accident. ^[12] The fist of exceptions under Rule 404(b) is “neither mutually exclusive nor collectively exhaustive.” ^[13] This Court has held that such extraneous-offense evidence is also admissible to corroborate certain kinds of statements and testimony, such as to rehabilitate an impeached witness or corroborate a defendant’s confession. ^[14] In this case, the State used the evidence of the children’s deaths to support the testimony of a jailhouse informant, Michael Beckcom. This information corroborated the defendant’s confessions to Beckcom by detailing the manner in which the crimes were committed with information that Beckham could not have obtained except from appellant himself.

In addition to corroborating a defendant’s confession, extraneous-offense evidence may also be admissible as same-transaction contextual evidence, where “several crimes are intermixed, or blended with one another, or connected so that they form an indivisible criminal transac[*732] tion.” ^[15] In that situation, “the jury is entitled to know all relevant surrounding facts and circumstances of the charged offense; an offense is not tried in a vacuum.” ^[16] That is precisely what occurred here.

In this ease, the trial court stated that the evidence was admissible as same-transaction contextual evidence. This decision was within the zone of reasonable disagreement. Same-transaction contextual evidence results when an extraneous matter is so intertwined with the State’s proof of the charged crime that avoiding reference to it would make the State’s case incomplete or difficult to understand. ^[17]

Although it is a delicate business, and there is the danger that evidence of the “collateral consequences” of a defendant’s actions may improperly divert the jury from the charged offense or introduce significantly more prejudice than evidentiary value, it was not an abuse of discretion in this case for the trial court to conclude that the murders of Steve and Nilda and the deaths, by smoke inhalation, of their three children were so connected that they formed an indivisible criminal transaction.

First, evidence of the children’s deaths was part of the crime scene. That evidence was necessary to fully understand the situation as neighbors and firefighters found it. From the moment the Herrera’s neighbor noticed their house was on fire, all of the people who arrived at the scene were concerned about the survival and safety of all five family members inside the home. The neighbor testified that although the smoke made it virtually impossible to breathe, he tried to break into the home repeatedly because he thought he heard the baby cry. Additionally, the firefighters who testified stated that they, too, made multiple trips into the smoke-filled home in an attempt to find survivors. Testimony concerning the search for, and discovery of, the children in the upstairs bedrooms was an integral part of the discovery of the murder victims and description of the crime scene. Second, the children’s deaths were a direct consequence of appellant’s conduct of setting fire to Nilda. According to appellant’s own statements to Michael Beckcom, he set Nilda’s body on fire in the living room, knowing that the children were asleep in the bedrooms of the house. And although the fire self-extinguished in the living room, it is a fair inference that appellant thought that the fire would spread throughout the rest of the house, killing the children and destroying all of the crime-scene evidence contained inside it. Thus, Steve and Nilda’s murders are so intertwined with the deaths of their children that the State’s case might well be incomplete without some mention of the children’s presence in the home. Under these circumstances, testimony about the children’s deaths fills in gaps of the interwoven events and consequences of a defendant’s criminal conduct and thus helps the jury to understand the case in context. In light of the above, the trial court did not abuse its discretion in admitting the evidence of the children’s deaths despite appellant’s Rule 404(b) objection. Point of error one is overruled. Evidence of the Children’s Deaths and Rule 4.03

Appellant next argues that the trial court’s admission of evidence that the children died in the house fire violated[*733] Rule 403. In point of error two, appellant generally challenges the admission of “the facts and circumstances surrounding the deaths of the complainants’ three children.” In point of error four, he argues that the trial court erred in admitting “the autopsy photographs depicting the dissection of each of the three bodies of the complainants’ children.” In point of error five, he asserts that the trial court erroneously admitted “the crime scene photographs of the three bodies of the complainants’ children.”

Rule 403 provides:

Although relevant, evidence may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice, confusion of the issues, or misleading the jury, or by considerations of undue delay, or needless presentation of cumulative evidence.

A proper Rule 403 analysis includes, but is not limited to, the following factors: (1) the probative value of the evidence; (2) the potential to impress the jury in some irrational, yet indelible, way; (3) the time needed to develop the evidence; and, (4) the proponent’s need for the evidence. ^[18]

This evidence had probative value to a contested matter-Beekcom’s credibility. Beckcom, a key witness in the State’s case against appellant, testified that appellant told him that the children were in bed when he set the fire and that they died from smoke inhalation. Evidence of these particular facts and circumstances corroborated Beckham’s assertions and enhanced his credibility. Moreover, Beckcom’s knowledge of these facts and circumstances was also probative to show that it was, in fact, appellant who committed the crime. ^[19] As for potential prejudice, appellant argues that the admission of this evidence “carried with it the clear danger that the jury would be confused by the nature of the charge against the appellant.” However, there was little likelihood that the evidence would encourage the jury to reach an irrational verdict or act on the basis of emotion. Although the children’s deaths were tragic, evidence of their deaths did nothing to prove that appellant was responsible for the murders of Steve and Nilda. No matter how angry the jury might have been about the children’s deaths, that emotional response could be connected to appellant only if the jury first found that he caused their parents’ deaths. Therefore, the relatively strong probative value of the evidence was not substantially outweighed by the mere possibility of unfair prejudice. The trial court did not abuse its discretion in admitting this evidence. Point of error two is overruled.

Evidence of the Children’s Deaths and Due Process

In point of error three, appellant raises a constitutional challenge to the admission of the evidence that the children died from smoke inhalation caused by the fire. He argues that the “admission of the extraneous offense deprived [him] of a fair and impartial trial, in violation of his right to due process.” For the same reasons expressed in the previous point of error, we hold that the admission of this evidence did not deny appellant a fair and impartial trial. The properly admitted same-transaction contextual evidence did not offend appellant’s due-process rights. Point of error three is overruled.

Crime-Scene Photographs of the Children and Rule W3

We next turn to appellant’s complaints regarding the trial court’s ad[*734] mission of photographs. Appellant contends that even if the admission of the crime-scene and autopsy photographs of the children were admissible under Rule 404(b), they were unfairly prejudicial and thus violated Rule 403. The decision to admit or exclude photographic evidence is generally left to the sound discretion of the trial court. ^[20] In deciding whether photographs are unfairly prejudicial, we must also consider the following factors: the number of photographs, the size, whether they are in color or black and white, whether they are gruesome, whether any bodies are clothed or naked, and whether a body has been altered by autopsy. ^[21]

Outside the presence of the jury, appellant objected to the crime scene photographs depicting the children’s bodies. In response, the trial court excluded five of the challenged photographs. Seven photographs depicting the children’s bodies and their locations were admitted before the jury. ^[22] Five of these photographs depict the bodies of Rachel and Valerie as they were found in their bedroom, and two of the photographs depict Jade’s body as she was found in the master bedroom. ^[23]

Specifically, State’s Exhibit 47 shows Rachel lying face-down on the bedroom floor. In State’s Exhibit 49, Rachel is lying face-up on the floor, after being rolled over by the paramedics. State’s Exhibit 50 shows Valerie’s bed, with her body lying face-down at the top of the bed and parallel to the headboard. State’s Ex[*735] hibit 52 more clearly depicts Valerie’s body lying face-down on the bed. In State’s Exhibit 55, Valerie is lying face-up on the bed, after being rolled over by the paramedics. The other two photographs depict Jade’s body as it was found in the master bedroom. State’s Exhibit 68 shows Jade lying face-up on the floor next to the bed, and State’s Exhibit 65 offers a closer view of her body.

In all of the photographs, the children are wearing their bedclothes, and their bodies are covered in soot. The photographs of the children lying face-up show the soot and mucus that accumulated in and around them mouths and noses. Although deceased, the children were not mutilated or charred. With the exception of the discoloration around their noses and mouths, they look like they are sleeping. The danger of unfair prejudice from the admission of these photos is small, particularly because the jury also viewed extremely grisly photographs of Nilda’s badly burned body.

These photographs accompanied the testimony of Marshall J. Kramer, who investigated the crime scene. Kramer testified that the children’s bodies were found in the bedrooms and that the accumulation of soot and mucus in their mouths and noses was indicative of smoke asphyxiation. Here, Rule 403 did not prohibit witnesses from testifying that the children died from smoke inhalation as a result of the fire. The crime scene photographs depicting the location and condition of the children’s bodies were limited in number, and the State focused on them only to the extent necessary to explain the neighbor’s and firefighters’ attempts to account for all of the inhabitants of the house and to corroborate Beckcom’s testimony. Therefore, the probative value of the crime-scene photographs was not substantially outweighed by the danger of unfair prejudice, and the trial court did not abuse its discretion in admitting these photographs over appellant’s Rule 403 objection. ^[24] Point of error five is overruled.

Autopsy Photographs of the Children and Rule ⅛03

We now turn to whether the admission of the children’s autopsy photographs violated Rule 403. In a hearing outside the presence of the jury, appellant objected to the autopsy photographs depicting the “dissected body parts” of the children. Defense counsel argued that the photographs were unnecessary and unfairly prejudicial, and offered to stipulate to the cause of death. The trial court admitted the photographs over defense counsel’s objection.

The record contains twelve color photographs taken during the children’s autopsies. All of the photographs are detailed close-ups, and the medical examiner used[*736] instruments to hold the organs open in some of them.

Specifically, State’s Exhibits 144 through 146 are photographs taken during the autopsy of Rachel. State’s Exhibit 144 is a picture of her “neck organs,” showing a thick layer of soot on her tongue and into the opening of her larynx. State’s Exhibit 145 offers a closer view of the carbon material going down into her larynx. State’s Exhibit 146 is a picture of her lungs, which have been dissected to show the amount of carbon material contained within them.

State’s Exhibits 159 through 162 are photographs taken during the autopsy of Valerie. State’s Exhibit 159 depicts her “neck organs,” with a thick layer of carbon material from the tip of the tongue to the trachea. State’s Exhibit 160 is a closer view of the larynx. State’s Exhibit 161 depicts her dissected lungs and the amount of carbon material contained within them. State’s Exhibit 162 is a picture of her esophagus, showing the amount of carbon material that entered her stomach.

State’s Exhibits 167 through 171 are photographs taken during the autopsy of Jade. State’s Exhibit 167 shows her dissected lungs and the amount of carbon material contained within them. State’s Exhibit 168 is a closer view of one of her lungs. State’s Exhibit 169 depicts the amount of carbon material on her dissected tongue, and State’s Exhibit 170 depicts the amount of carbon material in her larynx. State’s Exhibit 171 is a picture of her stomach, showing the amount of carbon material inside it.

The State did not need the autopsy photographs of the children’s dissected internal organs to fully explain the crime scene or to corroborate Beckcom’s testimony. Sufficient corroboration was provided by witness testimony, autopsy reports, crime scene photographs, and other autopsy photographs of the children’s bodies before their internal organs had been removed. Furthermore, the cause of the children’s death was not disputed. Most important, appellant was not charged with murdering them. ^[25] Thus, the minimal probative value of the autopsy photographs at issue, if any, was substantially outweighed by the danger of unfair prejudice, confusion of the issues-by unduly focusing the jury’s attention upon the deaths of the children rather than the deaths of their parents for which appellant was charged- and needless presentation of cumulative evidence. The trial court abused its discretion in admitting the photographs over appellant’s Rule 403 ob[*737] jection. ^[26]

Finding error in the admission of evidence, however, does not end our analysis. We must next determine whether the error was harmless under Rule 44.2(b). Although it is a close call, we cannot conclude that the State’s use of these autopsy photographs affected appellant’s substantial rights. Appellant argues in his brief that the State emphasized the children’s deaths to the jury and argued his bad character because he could “take out a whole family and come out clean.” While appellant is correct and such argument is improper, we cannot see how the State’s argument would have been affected had the autopsy photographs been excluded. Even the slightest reference to the crime scene and the children’s deaths could still support that argument. And there are additional reasons for our conclusion. First, at the time of their admission, the jury had already seen and heard about the disturbing circumstances of the children’s deaths through properly admitted photographs and testimony. Second, these photographs were not particularly gruesome or emotionally charged; they were clinical and depicted disembodied organs and tissue. Third, they pale in comparison to the properly admitted post-mortem photographs of Steve Herrera and Nilda Tirado whose deaths appellant was charged with intentionally causing. Fourth, the State, while emphasizing appellant’s admission to Beckcom that he had “taken out” an entire family, did not dwell upon or emphasize the improperly admitted post-autopsy photographs of the children. Fifth, these photographs have nothing to do with the disputed issue at trial of whether appellant murdered the children’s parents as charged. Thus, these photographs do not affect the determination of appellant’s guilt in this case and would not emotionally sway a factfinder until and unless he had found that appellant was the person who had caused the parents’ deaths. ^[27] In sum, we conclude that the erroneous admission of the autopsy photographs depicting the children’s internal organs did not affect appellant’s substantial rights. ^[28] Point of error four is overruled.

PUNISHMENT PHASE

In point of error eight, appellant asserts that the trial court improperly instructed the jury that they could not consider sympathy when answering the special issues. Appellant argues that this anti-sympathy charge restricted the effect of the mitigation evidence and violated his Eighth Amendment right against cruel and unusual punishment.

We have previously held that anti-sympathy charges do not unconstitutionally contradict mitigation instructions. ^[29] We have further held that anti-sympathy charges are appropriate in that they properly focus the jury’s attention on those factors relating to the moral culpability of the defendant. ^[30] Finding no error in this punishment change, we overrule appellant’s eighth point of error.

[*738] We affirm the judgment of the trial court.