FTP name this Agatha Christie about a famous train.
An American dies.  It is soon determined that he was an infamous child kidnapper and killer.  A misplaced button, overheard conversations, a mongrammed handkerchief, and a mysterious figure in a kimono become important clues for Hercule Poirot.  Of course, his snow-trapped fellow travellers are intrigued as well.  FTP name this Agatha Christie about a famous train.
An American dies.  It is soon determined that he was an infamous child kidnapper and killer.  
Murder on the Orient Express