The Queen of Mystery has come to Harper CollinsAgatha Christie, the acknowledged mistress of suspense--creator of indomitable sleuth Miss Marple, meticulous Belgian detective Hercule Poirot, and so many other unforgettable characters--brings her entire oeuvre of ingenious whodunits, locked room mysteries, and perplexing puzzles to Harper Paperbacks...including Murder on the Orient Express , the most famous Hercule Poirot mystery, which has the brilliant detective hunting for a killer aboard one of the world's most luxurious passenger trains.