Death in the Clouds

This "locked room" mystery takes place in a commercial plane flying between Paris and Croydon airport. A French woman is found poisoned, and an incongruous blowpipe smeared with snake venom is found stuffed down the side of Hercule Poirot's seat. Needless to say, all is not as it seems, and where does the wasp fit in? The usual varied cast of Christie archetypes are present: the objectionable aristocrat; the earnest young man; the plucky young lady he is in love with; and so on.