A thirteen-year-old girl holds the clue to a death at a party on 31st October - was it a fatal mistake or a murder? At a Hallowe"en party, Joyce -- a hostile thirteen-year-old -- boasts that she once witnessed a murder. When no-one believes her, she storms off home. But within hours her body is found, still in the house, drowned in an apple-bobbing tub. That night, Hercule Poirot is called in to find the "evil presence". But first he must establish whether he is looking for a murderer or a double-murderer. Famed for her crime masterpieces, Agatha Christie"s books have become the best-selling in the world, appealing to readers young and old for their ingenious plots and immediately recognizable characters. The stories have also transcended the printed page, become bestselling audiobooks and award-winning films, plays and television series. Now words and pictures combine in an exciting new way of telling these stories -- full-colour graphic novels which enhance the original stories and offer a completely new way of enjoying some of the world"s most popular and exciting mysteries.