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 William Morrow Paperbacks. In Christie's gripping international thriller Destination Unknown , a woman at the end of her rope chooses a more exciting way to die when she embarks upon an almost certain suicide mission to find a missing scientist.