A novel by J.F. Penn

Catacomb

Walker Kane didn't believe in monsters… until they took his daughter.

Walker Kane didn't believe in monsters. Until they took his daughter.

Beneath the festival streets of Edinburgh, an ancient evil waits. Each year the Grendsluagh demands a human sacrifice in exchange for the city's prosperity, and a secret society known only as the Cabal has kept the bargain for centuries.

When ex-military search and rescue officer Walker Kane's estranged daughter Emily is taken, all he has is the locket she dropped as they carried her away, and one night to reach her.

Aided by a mythology-obsessed librarian and a daredevil urban explorer with her own debt to the darkness, Walker descends into a labyrinth of bone and fire, where saving Emily will cost him everything.

Taken meets Beowulf beneath the streets of Edinburgh.

Catacomb book cover
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Available in ebook, paperback, foiled hardback, large print and audiobook. Buying direct supports the author most, and ships worldwide.

Reader reviews
“Heroic librarian character? Yes please! ... I ended up reading it in one sitting because I had to know what was going to happen next ... a thrilling way to spend an evening!”Stephanie C., reader review
“Gripped me from the first word and carried on until the last page. Your imagination will take over completely and you are with Walker, Laurel and Max from start to finish. A real page turner.”Eve, reader review
“Eerie, creepy and set in an amazing location with just enough details to start to wonder if it could be true….myths and legends have to come from somewhere.”Steph, Goodreads review
More reader reviews on Goodreads →
The real mysteries

The research behind the book

Hidden places

The vaults beneath Edinburgh

The real underground chambers and night tours that seeded the book. 'I knew one day I would set a story there.'

Learn more →
Mythology

Building the Grendsluagh

Grendel from Beowulf, the Sluagh from Celtic myth: how a new monster is made from two old ones.

Landscape

Edinburgh's volcano

Castle Rock and Arthur's Seat are the roots of an extinct volcano, last erupted 350 million years ago.

Subculture

Urbex: place-hacking the city

The real urban exploration movement behind Max, from Ninjalicious to Bradley Garrett's Explore Everything.

Origins

Beowulf's monster

Why Grendel still works after a thousand years, and the epigraph that opens the novel.

Theme

The city that feeds

From Omelas to festival cities: who pays for prosperity, and what a place agrees not to see.

Catacomb by J.F. Penn: His daughter has been taken. Beneath Edinburgh, something ancient is waiting. Edinburgh Castle above, the hidden catacomb below: the city above celebrates, the darkness below demands blood. For readers who love relentless action, Celtic darkness and monsters beneath the modern world. Behind the story: a rescue thriller and a monster story inspired by Beowulf and Celtic myth.
Listen to a sample

Audiobook available direct from the author and on Audible, Apple, Kobo, Spotify and more.