Terminator: The Sarah Connor Chronicles (2008)

S1E7 The Demon Hand

Sarah sneaks into Agent Ellison's apartment and uncovers a file detailing her past experiences at the mental hospital, prompting her to seek out Dr. Silberman, who has since become obsessed with doomsday predictions. In another storyline, Cameron enrolls in a ballet class, while John learns the story of how his mother managed to break free from the mental institution.