Authors: Adrian Bott, Dave Allsop

Cover Artists: Dave Allsop

Pages: 220

Book of Unremitting Horror (GUMSHOE)

A horrific supplement for The Esoterrorists and Fear Itself

By Dave Allsop and Adrian Bott

See a PDF sample of the Book here.

The Book of Unremitting Horror was nominated in the Best Monsters/Adversaries category of the Ennie Awards.


Players in horror campaigns are a little too accustomed to the nightmares their characters face; even the most eldritch of tentacular horrors is less intimidating when you know exactly what it is, because your PC has faced it before.

New times demand new nightmares. This, therefore, is a book of horrors, not a manual of monsters. The horrors are nightmarishly intimate, often created from human vice, or let loose by human greed. They show us the ugliness that underlies reality. They are the crawling things under the rock of the everyday, sane world. Consequently, we’ve detailed our creatures in depth.

Each one has its own agenda, its own reason for existence and its own legend. We’ve made these creatures unusual, frightening and bizarre, yet sufficiently comprehensible that they players realize they are up against something intelligent, if inhuman.

The Book of Unremitting Horror includes thirty creatures each with:

The Soliloquy
  • Diary entries, articles and transcripts
  • A detailed description with behaviour
  • The forensic clues left behind by the creature
  • Details of their history and origins
  • Their special abilities
  • Their GUMSHOE system stats

The Book covers using creatures with The Esoterrorists background, and another includes detailed adventure hooks for use with that setting. There are also artifacts and new GUMSHOE abilities.

Finally, the book includes two full length adventures.

Using BOUH with The Esoterrorists and with Fear Itself

In Esoterrorists, you are a highly competent investigator, tracking down creatures of Unremitting Horror. You may risk injury, madness and death, but it’s your choice. In Fear Itself, you’re just a normal person, and the creatures are after you. Let’s take an example creature, the Sisterite. She hunts down vulnerable men online, arranges a date, then kills them. In Fear Itself, the adventure would start with your techie friend going missing. In Esoterrorists, you would be part of the OV investigating the work of a peculiar serial killer.


The Book of Unremitting Horror is our most critically acclaimed. See the complete reviews to date here.

In my option The Book of Unremitting Horror is a must-have for any GM interested in running horror campaigns, regardless if he/she is using a GUMSHOE game or not.

Excellent, atmospheric and very printer friendly. As a fan of gory, disturbing horror I can’t recommend this book highly enough. As a gamer, these monsters will show up in most of the sessions I run, and what higher review can I give this product than that?

The Book of Unremitting Horror is based on the d20 Book of Unremitting Horror already released by Pelgrane Press Ltd, and contains duplicate material from that publication.

People who bought this also bought The Esoterrorists 2nd Edition, Invasive Procedures and The Seventh Circle.

You may also be interested in GUMSHOE Starter Kit Bundle.

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