Romance on the High Seas (1948)

Socialite Elvira Kent suspects her husband of fooling around with other women. When he announces he can't join her on their scheduled ocean voyage, she hires a nightclub singer, Georgia Garrett, to pose as her on the cruise. Elvira stays at a hotel near home so she can spy on her husband. She's unaware, however, that her husband has hired a detective, Peter Virgil, to keep an eye on her at sea. Of course, Peter doesn't realize that Georgia is not Mrs. Kent...