Accountant David Stillwell doubts his sanity - or does he suffer from memory loss? After he witnesses an alleged suicide, killers seek his life and he has no idea why. With the help of a private detective, he tries to solve the mystery and gets to the bottom of a murder plot. Director Edward Dmytryk does not need to hide behind Alfred Hitchcock, the grandmaster of high tension: With THE 27th FLOOR, he succeeded in creating a sophisticated puzzle game about reality and deception, which keeps the viewer spellbound until the resolution.