A young businessman, out jogging one night, sees a beautiful woman undressing in her bedroom window. He is compelled to return every night to watch her, until one night he witnesses a murder in the same apartment and soon becomes the prime suspect.

Survivors of a tragic shipping collision are rescued by a mysterious black ship which appears out of the fog. Little do they realise that the ship is actually a Nazi torture ship which has sailed the seas for years, luring unsuspecting sailors aboard and killing them off one by one.