Submarine Alert

Roger Pryor

G.B. Fleming

Abner Biberman

Commander Toyo

Marc Lawrence

Vincent Bela

John Miljan

Mr. Bambridge / Capt. Haigas

Patsy Nash

Tina Deerhold

Ralph Sanford

Agent Freddie Grayson

Jack Carr

Old Mill Gate Guard

Dwight Frye

Haldine (uncredited)