"Henri" (Brian Donlevy) is a scientist obsessed with matter transportation. He's got all sorts of gadgets in the basement of his rural home and his son "Martin" (George Baker) to help out. Thing is, his son has already had a bad experience with all of this mad science, and now remarried to "Patricia" (Carole Grey) he wants out. Fat chance thinks his dad - think of your grandad who concocted all of this up in the first place. Also, well think of the previous experiments that are currently occupying some locked rooms elsewhere on the property - and of one occupant in particular. "Patricia" - that...