Gordon De Main

Col. Duval

Man with Masterson on Radio (uncredited)

George Bullock

Dock Official (uncredited)

Dave Underwood

Professor Fitzgerald

Superintendent (uncredited)

Wilfred Barnet

Plainclothesman

Jason (uncredited)

Denby

Party Guest (uncredited)

Immigration Guard (uncredited)

Elevator Passenger (uncredited)

Captain Bates

Gonzalez (uncredited)

Kronsky Aide

Salvage Boss

Captain Graham

Assayer

Bartender Jake

Police Sergeant (uncredited)

Deputy Miller

Jury forman

Self - Spectator (uncredited)

Gambling House Proprietor (Uncredited)

S.S. Official (uncredited)

Commander Bryson (uncredited)

Police Captain

Banker Williams