The Greene family are that staple of interwar American families on screen: rich and hate each other! They live in the family ancestral pile and must live there for fifteen years otherwise they won't get a share of the late Mr Greene's wealth.
After two of the family are killed within a few minutes of each other, Philo Vance (William Powell) is called in by the baffled police (Eugene Palette) to help, but even he is confused by the various possible suspects, though it helps that the possible suspects are being whittled down by being murdered too!
A good film. Technically interesting especially with some of the camera angles in the final act and the peril on the roof. The story is good with some interesting psychological aspects to it. Although an early talkie the sound recording and acting isn't too bad.