A mysterious hypnotist reverts his beautiful assistant back into the form of a prehistoric sea monster that she was in a past life.
Chester Morris | Dr. Carlo Lombardi |
Marla English | Andrea Talbott |
Tom Conway | Timothy Chappel |
Cathy Downs | Dorothy Chappel |
Lance Fuller | Dr. Ted Erickson |
Ron Randell | Police Lt. Ed James |
Frieda Inescort | Mrs. Chappel |
Frank Jenks | Plainclothes Sgt. with Lt James |
El Brendel | Olaf, the butler |
Paul Dubov | Johnny, the barker |
William Hudson | Bob, the ex-fiancé (as Bill Hudson) |
Flo Bert | Marta, the Maid |