The police are called to a report of an injured woman in apartment 9G. She is the victim of a violent assault, by an unknown assailant. Looking at the mess in the apartment, it is clear that there was a struggle, and the suspected weapon used was the electric iron. The victim is Mrs Adrian Nuffield, and her husband has been away on business for the past three days. He returned to find his wife lying injured on the bedroom floor, and made the call for the ambulance. Mr Nuffield is anxious to go with his wife to the hospital, but Captain Kennelly wants to question him further...