Klaus Kinski plays an insane old Nazi who runs a boarding house and only rents rooms to beautiful young girls. The house is rigged up with secret tunnels and booby traps so he can spy on and murder his tenants. Some decent gore and good suspense in this horror flick, but most of the kills occur offscreen. Kinski is incredibly loony though, the scenes with him playing Russian Roulette are creepy and intense.

One of the films Kinski did for the cash, but I doubt he got much from this one. Mostly bland and boring, with an overly dramatic and mostly unnecessary score, and really poorly handled fan service scenes. On the other hand, the cinematography is pretty good, and of course Kinski is the best actor in the entire film. Never reaches its potential.