When larcenous real estate clerk Marion Crane goes on the lam with a wad of cash and hopes of starting a new life, she ends up at the notorious Bates Motel, where twitchy manager Norman Bates cares for his housebound mother. The place seems quirky but fine until Marion decides to take a shower. Director Alfred Hitchcock's Oscar-nominated shocker has been terrifying viewers for decades -- and for good reason.