After Nursing Sister Marion Bates publicly claims that a recent surgical patient, postman Joseph Higgins, was murdered on the operating table, she too is found dead. Before being wheeled into the operating theatre, Higgins, who had been injured in a V-1 rocket attack, claimed to have recognized someone's voice. He also chastised the anesthetist, Dr. Barnes. When Bates is soon after found dead, stabbed in the chest with a scalpel, Inspector Cockrill of Scotland Yard arrives to investigate. Several members of the staff have secrets, be they love affairs or something else and it isn't at all clear who might be responsible or why. In the end, a surgical gown and a dab of paint leads Cockrill to the killer.—garykmcd