A university chemistry professor experiments with an ancient Mayan gas on a medical student, turning the would-be surgeon into a murdering ghoul as part of a plan to steal his lover.
George Zucco
David Bruce
Evelyn Ankers
Turhan Bey
Robert Armstrong
Milburn Stone
Addison Richards
Rose Hobart
Andrew Tombes
Charles McGraw
Lillian Cornell
Gus Glassmire
Gene O'Donnell
Mike Lally
Chuck Hamilton
Hans Herbert
Isabel La Mal
Bess Flowers
Cyril Ring
Bert Moorhouse
Edmund Mortimer
Lew Kelly
William Ruhl