Awkard v. United States

How later courts describe this case

• relying on Colo.R.Evid. 608, which is identical to Utah R.Evid. 608
• death penalty affirmed for stabbing death and robbery even though defendant had extensive history of mental illness
• "Expert testimony is admissible if the jury may receive 'appreciable help' from it."
• improper expert opinion on credibility harmless error under Ninth Circuit variant of test
• "A defendant cannot, by stipulating as to the identity of a victim and the cause of death, relieve the State of its burden of proof beyond a reasonable doubt.”