Miss Marple arrives in the Bahamas for rest and recuperation, where she encounters a retired army officer with a secret to reveal. He claims to have proof that a guest at the resort is a killer, but before he can specify who, he is poisoned and the incriminating evidence disappears. It falls to the indomitable amateur sleuth to unmask the culprit. Drama, with Helen Hayes, Barnard Hughes, Season Hubley and Swoosie Kurtz