Once Upon a Honeymoon (1942).

Once Upon a Honeymoon (1942). Romantic/comedy/drama. Cast: Cary Grant, Ginger Rogers and Walter Slezak.

The story begins when Katie O'Hara, a ex-burlesque queen who pretends to be Philadelphia socialite Katherine Smith, who is about to marry, Baron Von Luber. Katie is visited by reporter Pat O'Toole, who is writing an article trying to expose the baron as a Nazi undercover agent. Recognizing Katie as stripper, Pat follows her to Prague, where Katie and the baron are to be married.

After the fall of Czechoslovakia, the baron and Katie board a train for Poland. When the baron is questioned by the police about the money found in his wife's purse, Pat goes to warn Katie about her new husband. Katie, does not believe him, and sends Pat back to his compartment with his saxophone.

In Warsaw, Pat meets Katie at her hotel and invites her to a cafe, where he tells her she should leave her husband.

Meanwhile... the baron is trying to sell Polish General Borelski, guns. When the guns fail to work, Pat contacts the general, who now realize that the guns are part of the baron's plans to destroy Poland.

The general, who is the only person who can testify against the baron, is assassinated and the baron is jailed for questioning.

Pat visits Katie in her hotel suite, where she begins to believe that her husband is a Nazi. Katie, fakes her death and runs off with O'Toole. In Paris, she is recruited to spy against her husband. Will she be able to go through with it?

Fun Facts:

The question of top billing was resolved by having half of the prints with Cary Grant listed first, and the other half with Ginger Rogers listed first. The TCM print lists Grant first, but the programs distributed for the world premiere at the Radio City Music Hall in New York City listed Rogers first.

Berlin-born Natasha Lytess, who appears in the small role as the Jewish hotel maid, was Marilyn Monroe's acting coach and friend for many years.

Once Upon a Honeymoon, reminded me a little of the film, Notorious. Which has Grant as an FBI agent who gets Ingrid Bergman to marry Claude Rains to spy on his activities. Once Upon A Honeymoon, is a wonderful little comedy.

Ginger Rogers (July 16, 1911 – April 25, 1995). During her amazing career, she made a total of 73 films, and is best known for her role as Fred Astaire's romantic interest and dancing partner in a series of ten  musical films.

She also achieved great success in a variety of film roles and won the Academy Award for Best Actress for her performance in, Kitty Foyle (1940).