The Mad Ghoul

George Zucco Dr. Alfred Morris

David Bruce Ted Allison

Evelyn Ankers Isabel Lewis

Turhan Bey Eric Iverson

Robert Armstrong 'Scoop' McClure

Milburn Stone Sgt. Macklin

Addison Richards Editor Gavigan

Rose Hobart Della Elliott, reporter

Andrew Tombes Mortician Eagan

Charles McGraw Detective Garrity

Lillian Cornell Isabel's Singing Voice (voice) (uncredited)

Gus Glassmire 1st Cemetery Caretaker

Gene O'Donnell Radio Reporter (uncredited)

Mike Lally Reporter (uncredited)

Chuck Hamilton Policeman (uncredited)

Hans Herbert Attendant (uncredited)

Isabel La Mal Maid (uncredited)

Bess Flowers Woman in Audience (uncredited)

Cyril Ring Man in Audience (uncredited)

Bert Moorhouse Man in Audience (uncredited)