Cain's Jawbone: A Novel Problem

The half-million-copy bestselling literary puzzle--the most difficult-to-solve ever written--now for a whole new generation of puzzle enthusiasts.

Six murders. One hundred pages. Millions of possible combinations . . . but only one is correct. Can you solve Torquemada's murder mystery?

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 writte...