In the waning days of WWI, a U.S. "Mystery Ship," sets sail for the coast of Spain towing a submarine. Their mission is to find and sink a U-boat that has been especially effective in attacking Allied shipping. Posing as a harmless schooner, the mystery ship is in fact fitted with a formidable gun capable of sinking a U-boat. Stopping in the Canary Islands to refuel, the crew interacts with locals involved with Germans, and with Germans themselves, including the sister of the U-Boat commander, w...
Top Cast
GE
George O'BrienCmdr. Robert 'Bob' Kingsley
MA
Marion LessingAnna Marie Von Steuben
MO
Mona MarisFraulein Lolita
WA
Walter C. KellyChief Mike 'Guns' Costello
WA
Warren Hymer'Lug' Kaufman
ST
Steve PendletonEns. Richard 'Dick' Cabot (as Gaylord Pendleton)
WA
Walter McGrailChief Joe Cobb
LA
Larry KentLt. 'Mac' McGregor
HE
Henry VictorBaron Ernst von Steuben (U-boat commander)
