The Sleepwalker

Paperback Published on: 26/03/2026
Price: £9.99
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Synopsis

SOME NIGHTMARES YOU CAN'T WAKE UP FROM . . .

The stunning new crime thriller from the master of Scandinavian noir, Lars Kepler - available now!

An alarm sounds in the middle of the night for a burglary in progress at a winter-closed campsite in Bredäng, outside Stockholm.

The police spot a light in one of the farthest caravans and when the officers open the door they are greeted by a horrific sight. Floors, walls and furniture are completely covered in blood. A man has been killed with an axe and brutally dismembered.

On the floor lies a young man sleeping with a severed arm as a pillow. He is arrested and taken to Kronoberg prison, identified as seventeen-year-old Hugo Sand, the son of a famous writer.

Hugo suffers from a rare sleepwalking condition that is activated by nightmares. He is either the perpetrator or a witness, but claims to remember nothing from the night.

Detective Joona Linna contacts his old friend Erik Maria Bark to use hypnosis to try to find out what happened inside the caravan. So begins the sleepless hunt for a serial killer who is only just getting started . . .

From the 17 million copy global bestseller Lars Kepler, author of The Mirror Man, comes the most anticipated crime thriller of 2025 - perfect for fans of Jo Nesbo, Ragnar Jonasson and Alex North.

Praise for Lars Kepler:

'Fast and furiously paced . . . I lapped it up' - EVENING STANDARD

'Chilling, nerve-shredding, clever, and impossibly dark' - CHRIS WHITAKER

'A rollercoaster ride of a thriller full of striking twists' - MAIL ON SUNDAY

'As dark and chilling as a Swedish winter' - GREGG HURWITZ

'A non-stop rollercoaster of suspense' - JEFFERY DEAVER

'Ferocious, visceral storytelling' - DAILY MAIL

'Thrilling' - SUNDAY TIMES

Publisher information

  • Publisher: Zaffre
  • ISBN: 9781838777920
  • Number of pages: 512
  • Dimensions: 199 x 129 x 32 mm
  • Weight: 342g
  • Languages: English

Customer Reviews

View all
The Sleepwalker
Chilling and compelling
This chilling thriller explores the terrifying idea that someone can sleepwalk and commit murder but remember nothing.The chapters are short yet filled wi... READ MORE
Lovetoread2023
The Sleepwalker
Gruesome
Thank you NetGalley and Bonnier Books UK for this eCopy to review The Sleepwalker is everything I want in a Nordic thriller dark, disturbing, and utterl... READ MORE
Bzz Kolla
The Sleepwalker
Page Turner Alert!
When a young man is found sleeping beside a dismembered body he is arrested for murder. In the course of the investigation, it is proved that he didn't do... READ MORE
Mikimoo
The Sleepwalker
Bleak, engrossing, and fascinating
The Sleepwalker isn’t subtle. It doesn’t aim to be quiet comfort reading—it’s sleepwalking into nightmare territory; forensic terror mixed with psychologic... READ MORE
Mary Picken
The Sleepwalker
Top quality Scandi-crime
A young man is found asleep at a horrific crime scene. Is he the perpetrator or just and innocent witness? Detective Joona Linna has to investigate the p... READ MORE
Jo-anne Atkinson
The Sleepwalker
Four stars!
I am always drawn to the darkness of Scandi-noir, and Lars Kepler’s Joona Linna series delivers that darkness in full force. The Sleepwalker is brutal,... READ MORE
The Secret Book Review
The Sleepwalker
Dark and riveting!
I did not realize how dark and gory and very much horror like this story would be. Set in the very fitting darkness and storms of Sweden with a killer that... READ MORE
K. Bickmore