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