Strangers on a Train (1951)

Only Alfred Hitchcock could make a carousel scary. That and many scenes make Strangers on a Train a perfect thriller. Hitchcock is at his best when he works with tension. Here, it builds and builds. In terms of casting, one of the creepiest villains ever is Robert Walker as Bruno Antony. That classic, glazed over look in his eyes as he follows Guy Haines. Moral of the story is be careful who you talk to on a train. Before you know it, you might be an accomplice to murder.