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Unbound reprints 70,000 copies of TikTok hit Cain’s Jawbone

Authored by the Observer’s first cryptic crossword setter, Cain’s Jawbone was first published by Gollancz in 1934, under the pen name Torquemada. It was written with the 100 pages deliberately out of order, inviting readers to solve the murder mystery by re-ordering them. Only three people are thought to have solved the puzzle, including British comedy writer John Finnemore, who received £1,000 from the press after it reissued the book in 2019 and launched a competition. Read more

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