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.
Brian Donlevy
as Henri Delambre
George Baker
as Martin Delambre
Carole Gray
as Patricia 'Pat' Stanley
Yvette Rees
as Wan
Burt Kwouk
as Tai
Charles Carson
as Inspector Charas
Rachel Kempson
as Madame Fournier
Warren Stanhope
as Hotel Manager
Michael Graham
as Albert Delambre
Reed Hadley
as Ike
Jeremy Wilkin
as Inspector Ronet
Mary Manson
as Judith Delambre
