True Crime Files

James Fairweather is Britain's youngest serial killer.

Tyler Davis Bingham started out as a petty criminal but ended up leader of the white supremacist gang, The Aryan Brotherhood, one of the most brutal and feared prison gangs in the US prison system. He was a fearless fighter, and his physical prowess made him a natural gang leader.

Freddy Geas was a hired hitman for the Italian-American Mafia and he got away with murder for years. Eventually the mobster was caught, but being behind bars appeared to only make him more brutal.