Thor Christiansen

Serial killer Thor Christiansen was only caught because his fifth would-be victim survived a shot to the head in 1979. She recognized him months later in a bar and reported him to the police. Law enforcement then linked him with four other then-unsolved murders that had a similar MO. After his arrest, law enforcement officers realized they had investigated him as a suspect (among approximately one hundred others) in 1977. Christiansen died after being stabbed in the exercise yard at Folsom State Prison. His killer was not identified.