A group of Londoners gather at the home of their host in order to solve the murders of two company officers. Once assembled the host announces that half of one of the deceased's fortune will go to the guests and if anyone should die, that person's share would go to the others. Before any money is doled out, the doors are locked and the host insists that the murderer confess. Mayhem ensues, but eventually the killer tells all. ~ Sandra Brennan, All Movie Guide