V. Good Used. For The Passengers Of The Noon Flight From Paris To Croydon, A Routine Journey Becomes A Nightmare. In Mid-air A Brutal And Ingenious Murder Is Committed. One Of Them Must Be Guilty. But Who? Could It Be The British Businessman Who Is Dangerously Close To Bankruptcy? Or Is It The Writer Of Detective Novels, Trying Out An Idea For His Latest Book?