“Boon” (*1/2 out of four) was a boring melodrama about a professional assassin (Neal McDonough) trying to hide from his past life who meets a woman (Christiane Sidel) and finds that her and her son and himself are all hiding from the same underworld criminal organization and have to unite together to try and survive. Schizophrenic movie alternates from faux-sentimentality to flat action and dramatics but goes nowhere with either; only the ending comes alive but it’s too late by then. Mickey Rourke played a similar role in 1987’s “A Prayer For The Dying.”