A First Class Murder (2007)

"Flossie Carrington had it all - she was young and beautiful, she was the heiress to an American steel empire, and she was married to a handsome ex-Guards officer. But last Thursday, the nation was shocked by the discovery of her body, stuffed under the seat of a first-class compartment on the Plymouth Express. She had been stabbed to death and her fabulously expensive jewels were stolen. Flossie's father promptly called in Hercule Poirot to investigate. And now he has summoned all those concerned with the case to reveal what really happened that fateful afternoon. One - or more - of you around this table is a murderer. And your task is to discover who that is. This is the new edition of A First Class Murder, with a new plot and new characters, based on a couple of Agatha Christie's mysteries. "