Ian McShane stars as Peter Curtis, who has just been released from prison after serving four years for manslaughter. His victim's mysterious last words lead him on a frantic quest for answers in the tidal estuaries of the West of England, where he finds himself on a collision course with other parties who are as eager to solve the mystery as he is, and are seemingly even prepared to kill to find the answer.

Jane Marple solves the mystery when a local woman is poisoned and a visiting movie star seems to have been the intended victim.

When a humorous script-reader in her New York apartment sees an ad in the Saturday Review of Literature for a bookstore in London that does mail order, she begins a very special correspondence and friendship with Frank Doel, the bookseller who works at Marks & Co., 84 Charing Cross Road.