The shots of Poirot's Whitehaven Mansions building were taken at Florin Court in Charterhouse Square, near Holborn, London EC1.
This episode is based on Agatha Christie's short story The Third Floor Flat, first published in Hutchinson's Story Magazine in January, 1929 and later included in the collection Three Blind Mice and Other Stories (1950).
At the beginning of The Third Floor Flat, Poirot and Hastings go to the theatre to see a whodunit, and during the intermission Poirot confidently names the killer. When at the end of the play this solution proves to be wrong, Poirot complains of being cheated, as the mystery depended on information the audience did not have. But Agatha Christie's sense of mischief is at work, as her story The Third Floor Flat (and thus this episode) proceed to do exactly the same!
Poirot begins this episode with his head under a towel, breathing the steam from a basin of hot water, because he has a cold. By the end of the story, which is on the following day, the cold has been forgotten - the business of crime-fighting has done the trick. Poirot even says he had no cold, saying haughtily that he does not get sick! This is competely in keeping with his character: simultaneously dignified and childish.
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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