In 1934, the Observer’s cryptic crossword compiler, Edward Powys Mathers (aka Torquemada), released a novel that was simultaneously a murder mystery and the most fiendishly difficult literary puzzle ever written. The pages are printed in an entirely haphazard order, but using logic and intelligent reading, the pages may be sorted into the only correct order, revealing six murder victims and their murderers. A notoriously difficult puzzle, but an irresistible challenge. Paperback, 224 pages.