The bestselling thrillers that inspired the hit Apple TV+ show Slow Horses (Slough House Thriller 4)
The fourth book in the Sunday Times bestselling, award-winning, Slough House series, featuring Mick Herron's much loved band of disgraced spies and their notorious leader, Jackson Lamb, 'the most fascinating and irresistible thriller series hero to emerge since Jack Reacher' (Sunday Times)

*Now an award-winning Apple TV+ series starring Gary Oldman, Kristin Scott Thomas and Jack Lowden*

'A terrific spy novel' Ian Rankin

'A modern masterpiece' Irish Times

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Twenty years retired from the Intelligence Service, David Cartwright still knows where all the bones are buried. But when he forgets that secrets are supposed to stay hidden, there's suddenly a target on his back.

The 'Old Bastard' raised his grandson to be a hero, not a slow horse. Now, far from joining the myths and legends of Spook Street, River Cartwright is part of Jackson Lamb's team of pen-pushing no-hopers at Slough House. Which doesn't mean he won't ditch everything and go rogue when his grandfather comes under threat.

Lamb worked with Cartwright back in the day, and knows better than most that this is no innocent old man. So when a panic button raises the alarm at Intelligence Service HQ, it's Lamb who's called on to identify the body. And it's Lamb who'll do whatever's necessary to protect an agent in peril.

'Outstanding' Daily Telegraph