A night club singer (Marlene Dietrich) meets a scientist (Herbert Marshall), they marry and have a child, but when he falls ill she goes back to singing to pay for his treatment in Europe, but she gets the money from a wealthy man (Cary Grant) who she has an affair with. The plot is a basic love triangle, though Marlene Dietrich's character has lots of flaws and the script is very uneven. It is the performance of Marlene Dietrich that makes the film as she moves from loving mother to sexy night club singer, to woman on the run from her husband. The scene of her emerging from an ape suit and start singing in a night club is strange to say the least. There is good support from Herbert Marshall as the jilted husband and Cary Grant as the wealthy suitor.