Hugh Pickens writes "CIOL reports that Wikipedia has revealed the secret of Agatha Christie's famous murder mystery 'The Mousetrap' by identifying the killer in the world's longest running play, now at over 24,000 performances ever since its maiden performance in 1952, despite protests from the author's family and petitions from fans who think the revelation is a spoiler. Angry at the revelation, Matthew Prichard, Christie's grandson, who describes the decision of Wikipedia as 'unfortunate,' says he will raise the matter with the play's producer, Sir Stephen Waley-Cohen. 'My grandmother always got upset if the plots of her books or plays were revealed in reviews — and I don't think this is any different. It's a pity if a publication, if I can call it that, potentially spoils enjoyment for people who go to see the play.' Unrepentant, Wikipedia justifies the decision to reveal the ending of the play. 'Our purpose is to collect and report notable knowledge. It's exceedingly easy to avoid knowing the identity of the murderer: just don't read it.'"