Feature-length episode of the classic costume crimebusting drama with the marvellous Joan Hickson as Agatha Christie's spinster sleuth. A millionaire posthumously hires Miss Marple to investigate a crime, but she is given no details. She is instructed to go on a coach tour of historic homes and ends up in Abbey Dulcis, where she is invited to stay at the Old Manor. Then, there is a murder and Miss Marple sets about finding the killer.