Bletchley Park: the top-secret landmark of World War Two, where a group of young people were fighting to defeat Hitler, and win the war. March 1943, the Second World War hangs in the balance, and at Bletchley Park a brilliant young codebreaker is facing a double nightmare. The Germans have unaccountably changed their U-boat Enigma code, threatening a massive Allied defeat. And as suspicion grows that there may be a spy inside Bletchley, Jericho's girlfriend, the beautiful and mysterious Claire Romilly suddenly disappears.

Prizes

Winner of WH Smith Thumping Good Read Award 1993.

The brilliance of Enigma is that it gives readers the sense of being contemporary with its characters and then leads them on a dark journey of discovery to arrive at another of the Second World War's blackest horror stories, one not fully admitted until half a century later... Altogether top-class stuff. -- Peter Millar The Times Enigma totally gripped me -- Roy Jenkins Sunday Times After the resounding success of his first novel, Fatherland, the question was what would Robert Harris do for an encore? This is his resounding answer -- Phillip Knightley Mail on Sunday Extraordinarily good... undoubtedly the best thriller of the year, and perhaps of several years to come -- T. J. Binyon Evening Standard I finished the book regretful it had ended, and full of wonder at this extraordinary world, people and achievements it evoked -- David Cannadine Observer

Robert Harris is one of Britain's most famous writers of thriller novels and gripping historical fiction. He is the author of eight bestselling historical and contemporary thrillers: Archangel, Enigma, Fatherland, The Fear Index, The Ghost, Imperium, Lustrum and Pompeii, all of which were worldwide bestsellers. Harris has been shortlisted for three notable literary awards: the Walter Scott prize for historical fiction, the Whitbread first novel award (now known as the Costa Book award) and the British Book Awards Popular Fiction Award. His most recent bestselling thriller, The Fear Index, was shortlisted for the Ian Fleming Steel Dagger, for best thriller of the year, at the 2012 Specsavers Crime Thriller Awards. Robert Harris has worked with international film director Roman Polanski to create the Golden Globe winning film The Ghost Writer, starring Pierce Brosnan and Ewan McGregor. Enigma was adapted into an award-winning film starring Kate Winslet and Tom Hollander. His work has been translated into thirty-three languages. He was born in Nottingham in 1957 and is a graduate of Cambridge University. He worked as a reporter on the BBC's Newsnight and Panorama programmes, before becoming Political Editor of the Observer in 1987, and then a columnist on the Sunday Times and the Daily Telegraph. In 2003 he was named Columnist of the Year in the British Press Awards. He lives near Hungerford in Berkshire with his wife and their four children.