Bela Lugosi

Dr. Alex Zorka / Dr. Zane

Robert Kent

Capt. Bob West

Dorothy Arnold

Jean Drew

Edwin Stanley

Dr. Fred Mallory

Regis Toomey

Lt. Jim Daly

Jack C. Smith

Monk

Edward Van Sloan

Jarvis

Dora Clement

Ann Zorka

Anthony Averill

Rankin

Hugh Huntley

Perkins