Agatha Christie's Marple was voiced by Herbert Lom (who also made an on-screen appearance as Mr Dufosse in "The Murder at the Vicarage") in "Nemesis" and played by Antony Sher in "A Caribbean Mystery". The series also featured real-life characters: Winston Churchill appeared in "The Sittaford Mystery", Noël Coward in "", Louis Armstrong in "At Bertram's Hotel", and Ian Fleming and James Bond in "A Caribbean Mystery". Christie wrote twelve novels about Miss Marple, all of which have been adapted for the series. They are: In addition, a short story featuring Miss Marple, "The Blue Geranium," was adapted into a full-length episode. Three
A Pocket Full of Rye Fortescue tells Miss Marple she is, and the Inspector confirms it. Jennifer put out the dead blackbirds near Rex to remind him of his past offense. She knew her mother's vengeance lesson was wrong. Miss Marple and Inspector Neele realize this gave the theme to the murderer. Miss Marple explains what Gladys did: put the poison in the marmalade not knowing it was poison, and the rye in his pocket, at the direction of her boyfriend, Albert Evans. Dove immediately blackmails Jennifer; Inspector Neele says if Dove pays the money back, he will not charge her. Miss Marple explains that