The Fourth Door

Imprint: No Exit Press

Category: Crime & mystery

Series: Twist & Hurst

The Fourth Door

The Fourth Door

Paul Halter

‘Paul Halter is France’s answer to John Dickson Carr’ Martin Edwards

The ultimate locked-room mystery.

In Paul Halter’s The Fourth Door, the impossible becomes reality. A haunted room. An unbroken seal. A murder victim whose very identity is an enigma. And then, a second death in a house surrounded by untrodden snow. Both crimes defy reason – but master detective Dr. Alan Twist reveals that even the most baffling mysteries have rational explanations.

This international bestseller is a masterpiece of intrigue and misdirection, hailed as the French answer to John Dickson Carr and a modern rival to Anthony Horowitz (The Twist of a Knife). Fans of Sophie Hannah’s Poirot mysteries and the layered puzzles of Knives Out will relish this thrilling, twist-laden tale. Winner of the Prix du Roman Policier, Halter cements his place as a titan of the locked-room genre.

Discover The Fourth Door, alongside Halter’s other captivating works like The Lord of Misrule and The Night of the Wolf.

  • Ingenious Locked-Room Puzzle: A double mystery that will challenge even the savviest fans of the genre, blending logic with eerie, supernatural overtones.

  • Critically Acclaimed Bestseller: Winner of the Prix du Roman Policier and widely regarded as a modern classic, appealing to fans of Anthony Horowitz and Sophie Hannah.

Category: Crime & mystery

Paperback

RRP: £9.99

ISBN: 9781835013489

Published: November 6, 2025

Extent: 192 pages

Ebook

RRP: £6.99

ISBN: 9781835013496

Published: November 6, 2025

Reviews

‘Paul Halter is France’s answer to John Dickson Carr, and The Fourth Door is a plot-driven puzzle feast, packed with intriguing locked room mysteries and other apparent miracles’ Martin Edwards, a CWA Diamond Dagger winner and President of the Detection Club

Frequently Asked Questions

What is "The Fourth Door" about?

'Paul Halter is France's answer to John Dickson Carr' Martin Edwards

The ultimate locked-room mystery.

In Paul Halter's The Fourth Door, the impossible becomes reality. A haunted room. An unbroken seal. A murder victim whose very identity is an enigma. And then, a second death in a house surrounded by untrodden snow. Both crimes defy reason – but master detective Dr. Alan Twist reveals that even the most baffling mysteries have rational explanations.

This international bestseller is a masterpiece of intrigue and misdirection, hailed as the French answer to John Dickson Carr and a modern rival to Anthony Horowitz (The Twist of a Knife). Fans of Sophie Hannah's Poirot mysteries and the layered puzzles of Knives Out will relish this thrilling, twist-laden tale. Winner of the Prix du Roman Policier, Halter cements his place as a titan of the locked-room genre.

Discover The Fourth Door, alongside Halter's other captivating works like The Lord of Misrule and The Night of the Wolf.

  • Ingenious Locked-Room Puzzle: A double mystery that will challenge even the savviest fans of the genre, blending logic with eerie, supernatural overtones.

  • Critically Acclaimed Bestseller: Winner of the Prix du Roman Policier and widely regarded as a modern classic, appealing to fans of Anthony Horowitz and Sophie Hannah.

Who wrote "The Fourth Door"?

"The Fourth Door" was written by Paul Halter.

**Paul Halter** is a leading French crime writer, best known for his ingenious locked room mysteries. Often compared to John Dickson Carr, he is praised for his atmospheric style and original plots. His debut, *The Fourth Door*, won the Prix de Cognac in 1988, followed by *Red Mist*, winner of the Prix du Roman d’Aventures. Halter has published over thirty novels, all focused on impossible crimes. His short stories have appeared in *Ellery Queen’s Mystery Magazine* and in the English collection *The Night of the Wolf*. He continues to be a major voice in classic detective fiction.

Who would enjoy "The Fourth Door"?
"The Fourth Door" is perfect for readers who enjoy books about crime & mystery.
Is "The Fourth Door" part of a series?

Yes, "The Fourth Door" is part of the "Twist & Hurst" series. It's book 1 in the series.

Picture of Paul Halter

Paul Halter

**Paul Halter** is a leading French crime writer, best known for his ingenious locked room mysteries. Often compared to John Dickson Carr, he is praised for his atmospheric style and original plots. His debut, *The Fourth Door*, won the Prix de Cognac in 1988, followed by *Red Mist*, winner of the Prix du Roman d’Aventures. Halter has published over thirty novels, all focused on impossible crimes. His short stories have appeared in *Ellery Queen’s Mystery Magazine* and in the English collection *The Night of the Wolf*. He continues to be a major voice in classic detective fiction.

Author Profile Page