Jean Yarbrough (Director) · Maurice Tombragel (Writer)
Eduardo Ciannelli
Dr. Van Glock
Onslow Stevens
Dr. Jim Borden
June Vincent
Gwen Runstrom
Ralph Morgan
Dr. Lester Cavigny
Janis Wilson
Nora Cavigny
John Baragrey
Dr. John Reade
Richard Lane
Insp. Fenwick
Philip Ahn
Ah Wong - Restaurant Owner
Lotte Stein
Nurse Maidie Halpern
Ralph Peters
Workman
David Hoffman
Andre Dussaud
John George
Waiter
Stuart Holmes
Medical Examiner
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Dr. Morgan and Dr. Cavigny star as a brace of scientists who return from the West Indies with a potent, phosphorescent serum that allegedly changes human beings into cats.
