Boris Karloff
(Host / Ira Perry / Pete Wade Sr. / Professor Charles Goncourt / Morgan Debs)
Whit Bissell
(Dr. Will Madison)
Eve Brent
(Lila Kirby)
George Hamilton
(Krishna Vernoy)
Myron Healey
(Bill Tighe)
Roy Engel
(Wally)
Rusty Lane
(Sheriff)
Shirley Mitchell
(Ellie Cooper)
Tod Andrews
(John Prescott)
Ron Hagerthy
(Pete Wade Jr.)
Jean Del Val
(Armand Vernoy)
Claudia Bryar
(Mrs. Kirby)