This episode is based on Agatha Christie's story The Chocolate Box, which was part of a collection called Poirot Investigates (1924). The story was first published in The Sketch magazine (under the title The Clue of the Chocolate Box) on 23 May, 1923.
S 12 : Ep 3
Aired 12/25/10 (1:29:00)
S 11 : Ep 4
Aired 12/25/09 (1:34:00)
S 11 : Ep 3
Aired 9/28/08 (1:34:00)
S 11 : Ep 2
Aired 9/21/08
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