Hammer to the skull

What do you do when you suspect your own dad is a serial killer? Sure enough, the dad Don Burnside (Dylan McDermott), bondage porn as a hobby, is suspiciously wacko, but the murderer of dozen of women? The son needs more evidence and fortunately there's another teenager hooked up with the same unsolved case. A fun little B-movie, tension is built nicely and suspense is plentiful. Stupid ending though.