A man is found dead in a London hotel. The knife is still firmly stuck in the victims chest, and Inspector Perkins strangely finds a glass eye in his jacket pocket. Kurt after that a second, mysterious murder happens A city-famous dancer of the Las Vegas Girls, who perform at the London Odeon Theater, is poisoned. Is there a connection between the pretty dancer and the hotel guest? Inspector Perkins and his colleagues are pressed for time. The man with the glass eye strikes deadly again and again. A first clue leads Scotland Yard to a billiard club, where one has to show a glass eye as an admission ticket.