21st Century London.
The Norman conquest never happened.
The ancient tribes of Britain remain undefeated.
But murders still have to be solved.

The small, mostly unimportant, island of Britain is inhabited by an uneasy alliance of tribes - the dominant Saxon East, the beleaguered Celtic West, and an independent Nordic Scotland - and tensions are increasing by the second. Supermarket warpaint sales are at an all- time high, mead abuse shortens the lives of thousands, and social media is abuzz with conspiracy theories suggesting the High Table's putting GPS trackers in the honeycakes.

Amid this febrile atmosphere, the capital is set to play host to the Unification Summit, which aims to join together the various tribes into one 'united kingdom'. But when a Celtic diplomat is found brutally murdered, his body nailed to an ancient oak, the fragile peace is threatened. Captain Aedith Mercia, daughter of a powerful Saxon leader, must join forces with Celtic Tribal Detective Inspector Drustan to solve the murder - and stop political unrest spilling onto the streets.

But is this an isolated incident? Or are Aedith and Drustan facing a serial killer with a decades-old grudge? To find out, they must delve into their own murky pasts and tackle forces that go deeper than they ever could have imagined.

"High concept brilliance supercharged by low humour, great characters and a gripping plot." - THE DAILY MAIL

"Henry's mash-up of fantasy and crime genres is inventive, enjoyably nasty and frequently very funny." - THE FINANCIAL TIMES

"Works beautifully, blessed with a plot that snaps into place at the end without ever seeming forced or contrived, and leads who are good company... More than good enough to give the likes of Ben Aaronovitch and Adam Simcox a run for their money." - SFX

"A compelling detective thriller set against the backdrop of an utterly original and credible alternate history of Britain. Will ensnare crime lovers, fantasy fans and history nuts alike." - MATTHEW GRAHAM, CREATOR OF LIFE ON MARS

"Simultaneously darkly funny and grimly authentic, Henry has reinvented crime fiction for a tribal age. It's Vikings meets The Bridge - and it really works." - AVA GLASS

"Bark out loud funny." - RADIO TIMES

"An author to keep a close eye on." - DAILY MIRROR

"Lots of delightful touches... a fun and well-worked out, engaging read." - FORTEAN TIMES

"The concept is pure genius... It manages to be both a great alt-history and a really good mystery thriller... Enormously enjoyable." - KJ CHARLES

"Unlike any book that I have read before. It's fast-paced, intricately plotted, and packed with richly drawn characters. It's downright astonishing." - MW CRAVEN