The Queen of Mystery has come to Harper Collins! Agatha Christie, the acknowledged mistress of suspense\u2014creator of indomitable sleuth Miss Marple, meticulous Belgian detective Hercule Poirot, and so many other unforgettable characters\u2014brings her entire oeuvre of ingenious whodunits, locked room mysteries, and perplexing puzzles to Harper Paperbacks\u2026including 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\u2019s most luxurious passenger trains.