"An ocean liner is found at sea with everyone on board dead. An investigation is begun to find out what happened."
John Halliday
as Maximilian Kreig
Charles Ruggles
as Blackie Witherspoon
Shirley Grey
as Lili Kingston
Neil Hamilton
as James Cowles
Jack La Rue
as Gregory Cordoff
Verree Teasdale
as Millicent Hazlitt
Stanley Fields
as Capt. Swanson
Leila Bennett
as Lena Klein
Morgan Wallace
as Morton Hazlitt
Thomas E. Jackson
as Capt. Derick Alison
William Janney
as Edward Wilson
Paul Hurst
as Boatswain
Frank Hagney
as First Mate
Clarence Wilson
as Ship's Doctor
Paul Porcasi
as Luigi - the Chef
Bobby Dunn
as Cross-eyed Sailor
Kit Guard
as Larson
Peter Hancock
as Male on Yacht
Eddie 'Rochester' Anderson
as Seaman (uncredited)
Paul Sloane
Director
Robert Presnell Sr.
Story
Manuel Seff
Writer
Harvey F. Thew
William LeBaron
Producer
Herman Hand
Original Music Composer
John Leipold
Harry Fischbeck
Director of Photography
Eda Warren
Editor
Wiard B. Ihnen
Art Direction
Travis Banton
Costume Design