Quick recap
On the Prometheus flight from Paris to London, moneylender Madame Giselle is found dead. It looks like a wasp sting, but there's a poisoned dart in her neck and a blowpipe behind the seat of Poirot, who was dozing on board. The passengers include a mystery writer, a countess in debt, archaeologists and hairdresser Jane Grey, who helps Poirot. Giselle's unknown daughter, heir to her fortune, soon turns up. Poirot reveals the killer is dentist Norman Gale, who disguised himself as a steward to strike. He had secretly married Giselle's daughter to get the money and planned to kill her too.
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