A traitor is lurking somewhere aboard the USS Carolina, and Lt. Tom Randolph is determined to find the offender. First a revolutionary new piece of technology -- an electric firing device -- is sabotaged. Then one of the cruiser's crew is murdered. In order to catch the killer, the captain locks down the ship. With foreign dignitaries, corporate goons and even Tom's girlfriend, Betty, trapped on the vessel, there is no shortage of suspects.
Robert Taylor
as Lieutenant Tom Randolph
Jean Parker
as Betty Lansing
Ted Healy
as Mac O'Neill
Una Merkel
as 'Toots' Timmons
Nat Pendleton
as 'Spud' Burke
Jean Hersholt
as Victor Hanson
Arthur Byron
as Captain John Winslow
Frank Shields
as Lieutenant Arnold
Donald Cook
as Lieutenant Commander David Tucker
Mischa Auer
as Kamchukan Consul (Uncredited)
Julie Bescos
as Crewman (Uncredited)
Ward Bond
as 'Heavy' Johnson (Uncredited)
