Miss Jane Marple (Helen Hayes) happily abandons her sleuthing duties to enjoy a tropical vacation -- until a guest is murdered at the posh Caribbean resort in this small-screen adaptation of Agatha Christie's novel. With corpses piling up and scores of suspects on her list, including the hotel owners, a physician and a maid, the prim detective has her hands full. Barnard Hughes plays a wealthy guest who helps her crack the case.