The Researcher's First Murder

The Researcher's First Murder

A Novel Mystery

$14.95

Publication Date: 4th November 2025

The next challenge for fans of Cain's Jawbone: the TikTok sensation and international bestseller. A body is found stabbed to death in a locked room. The police find no weapon, no motive and no suspects. However,... Read More
The next challenge for fans of Cain's Jawbone: the TikTok sensation and international bestseller. A body is found stabbed to death in a locked room. The police find no weapon, no motive and no suspects. However,... Read More
Description

The next challenge for fans of Cain's Jawbone: the TikTok sensation and international bestseller.

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. This book contains those cards.

Solvers must rearrange the pages of text to unravel the story and identify the murderer, victim and location for each of the ten murders. They must also consider the separate puzzles presented by the curious images on the other sides.

Torquemada taught us that complete dedication is key and from devising detective pinboards to daily investigation diaries, Cain’s Jawbone puzzlers did him proud. But now the time has come to dust off that magnifying glass, because a global movement to solve the first picture postcard puzzle is about to begin. Do you have what it takes to explain The Researcher’s First Murder?

Details
  • Price: $14.95
  • Pages: 100
  • Carton Quantity: 3
  • Publisher: Unbound
  • Imprint: Unbound
  • Publication Date: 4th November 2025
  • Trim Size: 5.07 x 7.79 in
  • Illustration Note: Black and white illustrations throughout
  • ISBN: 9781789652130
  • Format: Paperback
  • BISACs:
    FICTION / Mystery & Detective / Amateur Sleuth
    FICTION / Mystery & Detective / Cozy
    FICTION / Mystery & Detective / Traditional
    GAMES / Puzzles
Author Bio
John Finnemore is a British writer, best known for his shows 'Cabin Pressure', 'Double Acts' and 'John Finnemore’s Souvenir Programme' for the BBC. He also sets Listener crosswords for The Times, under the name Emu. He was the first person to solve Cain’s Jawbone since the 1930s and did so in a lockdown project in 2020. He sincerely hopes it will not take a worldwide pandemic to solve this one.

The next challenge for fans of Cain's Jawbone: the TikTok sensation and international bestseller.

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. This book contains those cards.

Solvers must rearrange the pages of text to unravel the story and identify the murderer, victim and location for each of the ten murders. They must also consider the separate puzzles presented by the curious images on the other sides.

Torquemada taught us that complete dedication is key and from devising detective pinboards to daily investigation diaries, Cain’s Jawbone puzzlers did him proud. But now the time has come to dust off that magnifying glass, because a global movement to solve the first picture postcard puzzle is about to begin. Do you have what it takes to explain The Researcher’s First Murder?

  • Price: $14.95
  • Pages: 100
  • Carton Quantity: 3
  • Publisher: Unbound
  • Imprint: Unbound
  • Publication Date: 4th November 2025
  • Trim Size: 5.07 x 7.79 in
  • Illustrations Note: Black and white illustrations throughout
  • ISBN: 9781789652130
  • Format: Paperback
  • BISACs:
    FICTION / Mystery & Detective / Amateur Sleuth
    FICTION / Mystery & Detective / Cozy
    FICTION / Mystery & Detective / Traditional
    GAMES / Puzzles
John Finnemore is a British writer, best known for his shows 'Cabin Pressure', 'Double Acts' and 'John Finnemore’s Souvenir Programme' for the BBC. He also sets Listener crosswords for The Times, under the name Emu. He was the first person to solve Cain’s Jawbone since the 1930s and did so in a lockdown project in 2020. He sincerely hopes it will not take a worldwide pandemic to solve this one.