Cain's Jawbone: The World's Most Difficult Puzzle Mystery

Cain's Jawbone is not a novel you read. It is a puzzle you confront.

Originally published in 1934, this legendary literary challenge was devised by Edward Powys Mathers, writing as Torquemada. The book consists of one hundred pages printed entirely out of order. The reader's task is to determine the correct sequence, identify six murders, and name their perpetrators.

The number of possible page arrangements exceeds 9.3 × 10¹⁵⁷. There is exactly one correct solution.

For decades, Cain's Jawbone...