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Cross the Line

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A brutal execution. A kid with video footage. A kingpin ready to burn it all. When a charred body is strung from a lamppost on an East London estate, a terrified teen catches it on film. DC Ja...
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  • 16 September 2025
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A gangland boss. A fiery crucifixion. A teenager who caught it all on camera.

Henry Matheson owns the drug trade in East London. To his competitors, he’s feared. To his customers, he’s God. To the police, he’s untouchable.

But when the smouldering remains of Henry’s closest competitor are discovered dangling from a lamppost in the middle of his estate, one man decides to take him on: Jake Tanner.

But he can’t do it alone. And with The Cabal’s clandestine network of corrupt officers threatening him and his family at every turn, Jake doesn’t know who to trust.

Forced with putting his faith in the wrong people, or putting himself in danger, Jake discovers that in the heart of the estate lies a dark secret. And knowing it can get you killed.

To find the answers he needs, and to catch one of the biggest criminals the city has ever seen, he must venture into the unknown and cross the line of duty.


Cross The Line is a gritty crime thriller perfect for fans of Simon McCleave, Rachel Mclean, and the BBC's Line of Duty.

Also in the series:
Toe the Line (Book 1)
Walk the Line (Book 2)
Under the Line (Book 3)
Cross the Line (Book 4)
Over the Line (Book 5)
Past the Line (Book 6)

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Price: $19.99
Pages: 576
Publisher: Vinci Books Ltd
Imprint: Vinci Books Ltd
Series: DC Jake Tanner Crime Thriller
Publication Date: 16 September 2025
Trim Size: 7.80 X 5.10 in
ISBN: 9781036705473
Format: Paperback
BISACs: FICTION / Mystery & Detective / General, Crime and mystery: police procedural, FICTION / Crime, Thriller: organised crime / gangland crime
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Jack Probyn writes murder mysteries and crime thrillers set in England. He studied Creative Writing at the University of Surrey and has always been fascinated by storytelling, particularly the dark and twisty kind. He is the author of the DC Jake Tanner series and the DS Tomek Bowen series, both packed with suspense, mystery, and unexpected twists. When he's not writing, he enjoys building LEGO, solving sudoku puzzles, and occasionally going snowboarding. He lives in England with his partner and their British Shorthair cat, Tommy.