Psycho IV: The Beginning ★½

Both a sequel and prequel to Psycho III, The Beginning uses a radio station interview as a framing device for Norman to recount his childhood and explore what made him who he is... It turns out, not knowing the specifics benefits his mysteriously psychotic character tremendously, especially when the specifics are as on the nose and uninteresting as they are here. The only relatively interesting thing in Psycho IV is the nature nurture commentary, but even that's handled with indelicately clumsy exposition. Unfortunately the origin installment is obligatory in these sequel-tastic franchises, cause they're almost always bad ideas.