1963 film by Samuel Fuller
Shock Corridor is a 1963 American psychological thriller film starring Peter Breck, Constance Towers, and Gene Evans. Written, directed and produced by Samuel Fuller, it tells the story of a journalist who gets himself intentionally committed to a mental hospital to solve a murder committed within the institution.
In 1996, Shock Corridor was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant".
Plot summary adapted from Wikipedia, licensed under CC BY-SA 4.0.