The son of the inventor of a matter-transporter, which turned him into a monster when he tried to transport himself along with a tiny housefly, continues to pursue his father's experiment, while his own two sons attempt to extricate him, themselves and the family name from further disaster and scandal.

• Lippert Films
• Brian Donlevy
• George Baker
• Carole Gray
• Yvette Rees
• Burt Kwouk
• Charles Carson
• Rachel Kempson
• Warren Stanhope