The Researcher's First Murder: A New Cain's Jawbone Puzzle

A body is found stabbed to death in a locked room. The police find no weapon, no motive and no suspects. However, the murderer has in their possession a box of one hundred cryptic picture postcards which – if properly understood – would explain not just this murder, but nine others. These are those cards.

Readers must rearrange the pages of text to unravel the story and identify the murderer, vic...