You are gently lulled into a simple, light hearted story but about half way through you find your your emotions are turned upside down as you're engrossed in something much darker with an unnerving tension to keep you on the edge of your seat.
What's refreshing, when compared with some lesser movies from this time is how well the characters have been written. Apart from Mary Astor who plays the wife with the coldness of alabaster needed to make the story work, the rest have a depth and complexity which makes them fascinating.
Warren William's multi-millionaire is a real person and like everyone has his faults but is essentially likeable. When he makes a wrong call, you get annoyed with him - that's the strength of good writing - you feel we know a character well enough not just to sympathise with them but to be angry with them because we don't want them to do.
The story constantly switches the way it asks you whether what William's character does is perfectly acceptable or morally wrong. You will know with certainty that of course it's fine and then moments later you will be thinking: no, how could you! It's a clever story, cleverly directed.
Ginger Rogers also plays a wonderfully complex character. She seems to be absolutely lovely but you just don't know. She has an enormously attractive natural and infectious enthusiasm for life, just by watching her you will find yourself smiling inexplicably. You want so much for her to be as lovely as she seems but even though you get to see her from a couple of different perspectives, you are still never quite sure. A very well written and well-acted character.