Primal Fear is a psychological courtroom drama that follows the trial of an altar boy, Aaron Stampler, accused of murdering a prominent archbishop. Defense attorney Martin Vail takes on the case, believing that Stampler is innocent due to his multiple personality disorder. As the trial progresses, shocking revelations come to light, challenging Vail's perception of his client. Primal Fear explores themes of identity, manipulation, and the nature of evil. With its twist ending and standout performances, the film keeps audiences on the edge of their seats until the very end.