Cain's Jawbone, Torquemada's infamous mystery novel, has been scrutinized in pain-staking detail resulting in over 1000 explanatory notes revealing word play, hidden meaning, literary and historical references, and, yes, even errors. And - following astute, insightful and fascinating critical analysis in which many aspects of the novel and the project are considered - the pages have been rearranged into a plausible order that challenges the claim there is one single ultimate solution to Edward Powys Mathers' literary puzzle. If you have attempted Cain's Jawbone, regardless of whether or not you have succeeded in unraveling its mystery, or you are thinking to attempt Torquemada's ninety-year-old puzzle, then this book is a must read.