A Swedish princess boards an ocean liner in Europe en route to an acting career in America and finds herself getting inconveniently attached to a bandleader returning home. To complicate matters, a blackmailer on board apparently knows she is not who she claims to be - and he has his sights set on other passengers with secrets of their own. In the meantime an escaped killer has stowed away under someone else's identity, and is killing again to cover his tracks; five international police detectives on board are heading the investigation to find him. When evidence points to the princess and bandleader, they must find the killer themselves - before he finds them.
Carole Lombard
as Princess Olga / Wanda Nash
Fred MacMurray
as King Mantell
Douglass Dumbrille
as Lorel
Alison Skipworth
as Lady Gertrude
George Barbier
as Captain Nicholls
William Frawley
as Benton
Porter Hall
as Darcy
Lumsden Hare
as Cragg
Sig Ruman
as Steindorf
Mischa Auer
as Morevitch
Bradley Page
as The Stranger
Tetsu Komai
as Kawati
