Performance

Detective Chief Superintendent George Masters of Scotland Yard and his assistant, Bill Green, have traveled north to consult in the investigation of a series of eleven murders -- one a month for the past year. Their preliminary research has yielded a remarkable, though unconventional, theory to link the victims of these unsolved crimes, but the Northern Counties police are reluctant to accept it. On the night the twelfth murder falls due, Masters and his team of detectives are attending a local performance of Handel's Messiah when the alto soloist falls dead on the stage. Taking this as their cue, they go into action. Operating in the face of numerous difficulties, including petty police rivalry, Masters and Green manage to piece together an ingenious solution to this baffling puzzle.