The Queen of Mystery has come to Harper Collins! Agatha Christie, the acknowledged mistress of suspensecreator of indomitable sleuth Miss Marple, meticulous Belgian detective Hercule Poirot, and so many other unforgettable charactersbrings her entire oeuvre of ingenious whodunits, locked room mysteries, and perplexing puzzles to Harper Paperbacks. Robbery and brutal murder aboard a luxury transport ensnares Poirot in The Mystery of the Blue Train.