Original Airdate: 19 February 1989 Written by: Clive Exton Directed by: Renny Rye Recurring cast: Captain Hastings
Tropes
Artistic License – Ships: The episode sets Poirot's cruise on a large yacht, rather than the larger liner the short story is set on. Justified, as period-appropriate ships are hard to come by
Blunt "Yes": Colonel Clapperton confesses to the murder by way of an angry "Yes!" as he is apprehended.
Chekhov's Skill: Subverted. Clapperton's skill at cheating at cards is ultimately a Red Herring meant to throw people off of the actual skill he used related to the murder - his ventriloquism.
Dead Person Impersonation: Clapperton uses his ventriloquism skills to mimic having a conversation with his wife, who's already dead by the time he does this, in order to provide himself an alibi.
Malaproper: Hastings, when he catches Skinner red-handed trying to sell Mrs. Clapperton's jewellery.
Hastings: I would like to ask you a few questions, if I'm very much mistaken!
Obfuscating Stupidity: Poirot attempts this with Ellie, downplaying Colonel Clapperton's interest in spending time with the younger women on board ship. It doesn't work.
Ellie Henderson: They're not children, monsieur Poirot. Nor am I.