Submarine Base

John Litel

James Xavier 'Jim' Taggart

Alan Baxter

Joe Morgan

Eric Blore

Spike, Morgan's Aide

Georges Metaxa

Nazi Agent Anton Kroll

George Flaherty

David Cavanaugh

Rafael Alcayde

Felipo

Fifi D'Orsay

Maria Styx

Iris Adrian

Dorothy

Jacqueline Dalya

Judy Pierson

Anna Demetrio

Angela Styx

Luis Alberni

Mr. Styx

Lucien Prival

Capt. Mueller - German Submarine