An ocean liner is found at sea with everyone on board dead. An investigation is begun to find out what happened.
John Halliday
Maximilian Kreig
Charles Ruggles
Blackie Witherspoon
Shirley Grey
Lili Kingston
Neil Hamilton
James Cowles
Jack La Rue
Gregory Cordoff
Verree Teasdale
Millicent Hazlitt
Stanley Fields
Capt. Swanson
Leila Bennett
Lena Klein
