While traveling by train, a woman (Mona Bruce) looks out her window at a passing train and sees a woman being strangled. She reports this to her friend, Miss Marple (Joan Hickson) who formulates a plan to unravel the mystery after the police dismiss the crime as a fantasy. This adaptation of the Agatha Christie novel suffers from changes made to her novel which add nothing to the film but serve to drag the film down with unnecessary filler that have nothing to do with the mystery at hand. A major character is removed, one character’s murder is changed from being poisoned to being shot and the film has one of Christie’s murder victims survive in the film. There’s not enough Miss Marple in the story either but as usual, Hickson embodies the beloved Christie sleuth to perfection. Still, it's a more faithful adaptation than the 1961 film version which was called MURDER SHE SAID. With Maurice Denham and Joanna David.