ONE: A Firebrand Thriller

by David McCaffrey

*Perfect for fans of Lee Child, Gregg Hurwitz, James Swallow, and BBC’s Bodyguard.*
You only need one person to change the world.
Sometimes for the better.
Sometimes for the worse.

London. A city humming with politics, secrets—and one catastrophic breach.

A message condemns a city to panic. A message concerning nuclear contamination of an everyday item. When, all the while, the real threat is hidden in plain sight.

Jack Ryder must uncover the real objective buried in the chaos behind the terrorist threat. Because this isn’t about money, or revenge. It’s about something darker—something hidden inside the very organisation meant to protect the nation.

As the terrorist plan unfolds, a young MI5 analyst will become the wildcard—trapped in the building, unseen, and determined to turn the tables from the inside. But trust is a currency in short supply. And the closer Jack gets to the truth, the more he

All it takes is ONE

“Like Die Hard, but British, smarter, and more personal. A siege thriller where the real danger isn’t the guns—it’s the secrets everyone’s dying to protect.”

260 pages, Kindle Edition

Published October 25, 2025

About the author

David lives in Redcar in the North East of England and currently works as an Infection Prevention and Control nurse in Hertfordshire. He has a Kelly, a Jake, a Liam a Moo Man, an Obi (the dog), a Padme, Ahsoka, and an Anakin (cats).

A huge fan of Steve Alten, John Grisham and Lee Childs, David loves reading as much as he enjoys writing. Hellbound was his first novel, all thanks to Britain's Next Bestseller and the aforementioned Steve Alten who took a chance on him as a writing coach client and taught him so much about what it takes to be a writer. It was voted by W H Smith readers as one of 2014's most underrated crime novels.

His second book, the novella prequel to Hellbound titled 'In Extremis' was published in 2015 and was a Semi finalist in the Kindle Book Awards 2016.
David ghost wrote 'By Any Means Necessary' with Stephen Sayers, released in 2016 and then returned to his Hellbound Anthology in 2017 with 'Nameless'.
All are available on Audible.co.uk.

’The Warmest Place to Hide', David's homage to all things David Cronenberg, was released in August 2018.
Two personal projects concerning bullying in the NHS were released in 2018 and 2021 respectively.

After a few years away from writing to deal with life stuff, David is back with a bang, with action-thriller ONE out now, Pandora, a horror book due out before the end of 2025 and a novella sequel to ONE due out in December 2025