The Marriage Circle

Unhappy couple Professor Stock and Mizzi can not find much to keep them happy any more. Stock is distressed by Mizzi's slovenly housekeeping, and Mizzi finds the her old friend's husband, Dr. Braun, more attractive than the Professor. Dr. Braun loves his wife, but finds it difficult to resist such a beautiful woman as Mizzi. Professor Stock finds this an opportunity to gather evidence to support a divorce and sends a private detective after Mizzi.