The Iceman: Confessions of a Mafia Hitman (1992)
(Part 1) (Part 2)

"While leading the life of a happy family man in the New Jersey suburbs Richard Kuklinski was also living a bizarre double-life as a Mafia hit man. Kuklinski tells first hand how he brutally murdered men at close range dismembered and disposed of them before returning home to his family. This film offers extraordinary insight into the cold-heart of a killer."