A 2015 docudrama thriller detailing the abhorrent true story of the titular experiment in 1971, The Stanford Prison Experiment follows professor Philip Zimbardo (Billy Crudup) and his psychological experiment that saw 18 students take on the roles of prisoners and guards in a faux prison on campus, which saw those posing as guards begin to subject the “prisoners” to mental and physical abuse. Outside of the fascinating and frequently challenging subject matter on display, this independent flick sports one hell of an ensemble cast, including Michael Angarano, Tye Sheridan, Olivia Thirlby, Logan Miller, and Succession‘s Nicholas Braun. 

Source: https://www.buzzfeed.com/kenwhanley/21-intense-period-pieces-for-those-hooked-on-oppenheimer