Hatchet For The Honeymoon (1970)
John Harrington (Stephen Forsyth) is a man completely insane and he'd be the first to tell you! Though at first poor John found his psychotic nature annoying he's grown to enjoy it and finds it quite amusing. John's murdered young innocent women on their wedding nights and is determined to continue until he finds out the "whole truth" as he calls it. It seems in addition to John's insanity he is troubled by visions of the death of his Mother, which he witnessed as a child. Each time he murders women he remembers more of the incident and the pieces of the puzzle surrounding the identity of the killer come into focus.