Celebrated actress Geraldine McEwan takes on the role of world-famous crime writer Agatha Christie's shrewd and inquisitive Miss Jane Marple in this classic murder mystery.Two trains draw briefly alongside each other as they race past a country house, and - to her horror - Miss Marple's friend, Mrs McGillicuddy witnesses a man in a passing carriage brutally strangling a mystery woman. But with no body to be found, the police decide she must have dreamt the incident. Miss Marple is convinced the answer lies with the ill-fated family who own the mansion passed by the train and persuades a bright young friend to pose as a housekeeper and gather clues for her.