OK, so I have had this book hanging around for a while, and it is out of print, but having just read it and loved it, I thought I would write this review. This is classic Poirot. First the murder occurs in the first chapter, which is great, because there is no waiting around. All the suspects are clearly identified, and each has a motive. Essentially, a french women of some intrigue and power is murdered on an air ship. Her murder appears to have been caused through poisoning through a blow pipe. After that Poirot goes to work, identifies the motives and engages in a bit of trickery. Anything more would spoil the plot. Needless to say, however, an excellent little mystery.