“Cult Killer” (*1/2 out of four) was a cold-hearted psychodrama about a protege (Alice Eve) of a renowned private investigator (Antonio Banderas); when he is murdered, she becomes obsessed with finding his killer and this brings her into a dangerous alliance with the killer himself and various other powerful figures in town who don’t want the truth exposes. Eve does what she can with a cardboard role but Banderas is wasted and film doesn’t garner enough suspense or character development to make it involving. Hardly the “cult” movie that its filmmakers had in mind.