Serpico (1973)
An honest New York cop named Frank Serpico blows the whistle on rampant corruption in the force only to have his comrades turn against him
The Gentleman from America (1956)
Rich American Howard Latimer visits London, and bets 1,000 pounds that he can spend the night in a room that is said to be haunted
The Hidden Thing (1956)
After Dana Edwards fiancee Laura is killed by a hit and run driver, he is visited by John Hurley, who claims to be able to use memory recall techniques that will help him to remember the cars license plate number
Crackpot (1957)
A Good Samaritan helps a newlywed couple with a flat tire But when the groom accidentally dirties the mans suit, the stranger reveals himself to be a dangerous crackpot