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One London Day

Published
Apr 2026
Main Genre
Thriller Thriller

About This Book

'The novel's darkly comic tone and cinematic feel make this a series to watch' The Times

One city, one day, and a battle of wills reaches boiling point

Joseph Severin, a respectable North London businessman, has a lucrative side job. He's doing the books, old school (because these days the only trail you can't trace is a paper one) for a rogue MI5 outfit, the Shadows, headed by psychopathic Sebastien. However, when the game is rumbled, Sebastien sends hitman Mr Phipps to kill Severin and get those books back. The spider web of collateral damage will be extensive, taking in Lottie, for whom Severin has developed a sudden, wild passion; Sonya, a Russian escort with a desperate deadline; and at MI5, the ambitious Ellerby, who has them all in her sights.

It's the hottest summer in fifty years and in the shadows, a deadly domino effect is about to spill out into the harsh light of day.

An earlier version of this book was published as One London Day by C.C. Humphreys, now expanded and revised 2026.

'Hard-boiled, lustful, edgy - a modern noir' Robert Dugoni

'A wonderful noir carnival of mayhem. A joyful, dark romp' Crime Time

'An intelligent, sharp, no-holds-barred thriller that had me leaning forward, turning page after page . Bravo, Mr. Humphreys. This may be your first contemporary thriller, but it certainly won't be your last' Giles Kristian

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Hardcover

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Hardcover
First Edition Apr 2026 Allison & Busby (UK) ISBN 0749033355
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eBook

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eBook
Jan 2026 Allison & Busby (UK) ISBN 0749033401
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eBook
Jan 2026 -- Not Selected ISBN B0FFJ6X3XS
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Audio

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Audible
May 2021 -- Not Selected ISBN B0959B5DSX
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