Three Act Tragedy / Agatha Christie

The Queen of Mystery has come to Harper Collins! Agatha 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. In her classic Three Act Tragedy, the normally unflappable Poirot faces his most baffling investigation: the seemingly motiveless murder of the thirteenth guest at dinner party, who choked to death on a cocktail containing not a trace of poison.

Sir Charles Cartwright should have known better than to allow thirteen guests to sit down for dinner. For at the end of the evening one of them is dead—choked by a cocktail that contained no trace of poison.

Predictable, says Hercule Poirot, the great detective. But entirely unpredictable is that he can find absolutely no motive for murder.…

http://www.harpercollins.com/books/Three-Act-Tragedy-Agatha-Christie?isbn=9780062073839&HCHP=TB_Three+Act+Tragedy