discussed Cited as authority (rule) Cook v. Schriro See Giglio v. United States, 405 U.S. 150, 153 (1972) (witness and the prosecutor stated that there was no plea deal when there was a lenient plea agreement); Miller v. Pate, 385 U.S. 1, 3-4, 6 (1967) (prosecutor had expert testify that substance on defendant’s shorts was blood when it was paint); Alcorta v. Texas, 355 U.S. 28, 30-32 (1957) (per curiam) (prosecutor told witness not to volun- teer that he had a sexual relationship with the defendant’s wife and witness testified he was not sexually involved with the wife).