Easily her most complicated plot, through to 1934.
An impossible murder. Everyone could be involved.
As the plane is close to landing, a wasp is spotted flying around the rear compartment before a steward finds that Giselle is dead.
Poirot, who has slept through most of the flight, dismisses the belief she died from a wasp sting. Instead, he points out a dart on the floor, which is found to have a poisoned tip: Giselle was stung in the neck with it. The question remains how she was murdered without anyone noticing. …Death in the Clouds