Solving the world's most puzzling mystery novel just got even more fiendish in this gorgeous new hardback collector’s edition – with the final solution sealed in an envelope at the back of the book! Can you crack all the clues and catch the killer before you unseal the ending?

'Agatha Christie's masterpiece' Spectator

Ten strangers are lured to an island mansion on an isolated rock near the Devon coast. Cut off from the mainland, with their generous hosts mysteriously absent, they are each accused of a terrible crime. When one of the party dies suddenly, the guests realise they may be harbouring a murderer among their number.

The ten strangers include a reckless playboy, a troubled doctor, a formidable judge, an uncouth detective, an unscrupulous mercenary, a religious spinster, two restless housekeepers, a highly decorated general and an anxious secretary. As one by one they are picked off, the dwindling group must stay one step ahead of their deadly stalker. Who will survive? And who is the killer?

And in every room hangs a of an ominous nursery rhyme, foreshadowing the awful fates of ten people doomed to die…

For the first time ever, this unique edition of Agatha Christie's masterpiece presents her story in a format that is entirely faithful to her original conception, with the final solution presented in a letter that can only be revealed once you have finished the story and discovered if you have solved the deadly puzzle correctly.

"Agatha Christie's masterpiece." - Spectator

"One of the very best, most genuinely bewildering Christies." - Observer

"The most astonishingly impudent, ingenious and altogether successful mystery story since The Murder of Roger Ackroyd." - Daily Herald

"One of the most ingenious thrillers in many a day." - Time Magazine

"There is no doubt that this is a highly ingenious jigsaw by a master of puzzling." - Books

"There is no cheating; the reader is just bamboozled in a straightforward way from first to last... The most colossal achievement of a colossal career. The book must rank with Mrs Christie's previous best - on the top notch of detection." - New Statesman

"The whole thing is utterly impossible and utterly fascinating. It is the most baffling mystery Agatha Christie has ever written." - New York Times

Agatha Christie was born in Torquay in 1890 and became, quite simply, the best-selling novelist in history. Her first novel, ‘The Mysterious Affair at Styles’, written towards the end of the First World War, introduced us to Hercule Poirot, who was to become the most popular detective in crime fiction since Sherlock Holmes. She is known throughout the world as the Queen of Crime. Her books have sold over a billion in the English language and another billion in 44 foreign languages. She is the author of 80 crime novels and short story collections, 19 plays, and six novels under the name of Mary Westmacott and saw her work translated into more languages than Shakespeare. Her enduring success, enhanced by many film and TV adaptations, is a tribute to the timeless appeal of her characters and the unequalled ingenuity of the plots.