Bela Lugosi

Character: Dr. Alex Zorka

Dorothy Arnold

Character: Jean Drew

Robert Kent

Character: Capt. Bob West

Edwin Stanley

Character: Dr. Fred Mallory

Regis Toomey

Character: Lt. Jim Daley

Jack C. Smith

Character: Monk

Edward Van Sloan

Character: Jarvis

Dora Clement

Character: Ann Zorka

Anthony Averill

Character: Rankin

Hugh Huntley

Character: Perkins

Monte Vandergrift

Character: Jarvis Goon

Frank Mayo

Character: West's Boss

Jim Farley

Character: Harbormaster

Eddie Acuff

Character: Mac

Ed Wolff

Character: The Robot

Roy Barcroft

Character: Parker (uncredited)

Lee J. Cobb

Character: Road Crew Foreman (uncredited)

Charles King

Character: Car-Crash Cop (uncredited)