Description: What happens when a college psych study goes shockingly wrong? In 1971 Stanford University professor Dr. Philip Zimbardo (Billy Crudup) cast 24 student volunteers as prisoners and guards in a simulated jail to examine the source of abusive behavior in the prison system. The results astonished the world, as participants went from middle-class undergrads to drunk-with-power sadists and submissive victims in just a few days. [IFC Films]