Poirot is approached by a Mrs. Todd, whose cook, Eliza Dunn, has suddenly disappeared. Poirot manages to track down the cook , and she tells him that a stranger, acting for a law firm, told her that she had inherited a property in the North of England but she had to go there immediately. Her heavy trunk was called for but it was deposited at the train station, where Poirot makes an interesting discovery, connected to a recent bank robbery.