Henry Kolker suspects his young wife, Kay Francis, of having a lover. She is taking ship to Havana. So Kolker hires PI George Brent to shadow her and get the goods on her. What neither of them suspect at this stage is that the real issue is that Kay Francis is still married to her first husband, slimy Monroe Owlsley. Her plan is to get a divorce in Havana. She doesn't expect Owlsley to follow her to put on pressure, nor to fall in love with Brent, and he with her. That's just the inscrutable workings of fate and the Warner Brother script department.
It was originally planned as another team-up between William Powell and Miss Francis. I expect it would have worked better that way. Nonetheless, Brent acquits himself well. So does Allen Jenkins as his assistant. He falls for b-girl and kickback artist Glenda Farrell in a nice little comic subplot. Still, the focus is on the leads, with Miss Francis sporting her usual variety of Orry-Kelly gowns and portrait photography by Barney McGill.