Set in the run up to WW2, Hercule Poirot is called into solve what seems to be the theft of some plans for a bomber. They have bene taken from Lord Maybury's house, he's in a position of power in the government and seems to be a fictional figure in a Churchillian mould. There is the obvious suspect - who has a clear alibi, the hard up younger son, the gambling wife, the possible accomplice and a shadow seen crossing the terrace from the study. I had a solution - it turned out to be wrong. It's a tightly packaged little thing. ( )

Lord Charles Mayfield is throwing a house party to conceal a meeting to discuss top-secret plans for a fighter plane, as well as catching out a spy in the process. But the plans are snatched and Hercule Poirot is called in to solve the mystery. Enjoyable. ( )