There are 9 books in the Slough House series. The newest book is Clown Town which came out in 2025.

1
Slow Horses

Book cover of Slow Horses

*Now a major TV series starring Gary Oldman*

'To have been lucky enough to play Smiley in one's career; and now go and play Jackson Lamb in Mick Herron's novels - the heir, in a way, to le Carre - is a terrific thing' Gary Oldman

Slough House is the…

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3
Real Tigers

Real Tigers

*Now a major TV series starring Gary Oldman*

'The finest British spy fiction of the past 20 years' Metro

Slough House is the Intelligence Service outpost for failed spies, former high-fliers now dubbed the 'slow horses'. Catherine Standish, one of their number, worked in Regent's Park long enough to understand…

4
Spook Street

Book cover of Spook Street

*Soon to be a major TV series starring Gary Oldman*

'A terrific spy novel' Ian Rankin

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

6
Joe Country

Book cover of Joe Country

*Now a major TV series starring Gary Oldman*

*THE SUNDAY TIMES BESTSELLER*

'Sets a new bar for spy fiction' Financial Times

In Slough House, the backwater for failed spies, memories are stirring, all of them bad. Catherine Standish is buying booze again, Louisa Guy is raking over the ashes of…

7
Slough House

Book cover of Slough House

*Now a major TV series starring Gary Oldman*

*THE INSTANT SUNDAY TIMES BESTSELLER*
**THE TIMES THRILLER BOOK OF THE YEAR**
***WINNER OF THE THEAKSTON OLD PECULIER CRIME NOVEL OF THE YEAR 2022***

'A gripping thriller' Ian Rankin

Slough House - the crumbling office building to which failed spies, the 'slow…

8
Bad Actors

Book cover of Bad Actors

THE INSTANT #1 SUNDAY TIMES BESTSELLER

*Now a major TV series starring Gary Oldman*

'A pitch-perfect espionage thriller' Sunday Times

In MI5 a scandal is brewing and there are bad actors everywhere.

A key member of a Downing Street think-tank has disappeared without a trace.

Claude Whelan, one-time First Desk…

9
Clown Town

Book cover of Clown Town
THE NINTH BOOK IN THE SERIES BEHIND SLOW HORSES, AN APPLE ORIGINAL SERIES NOW STREAMING ON APPLE TV+

Jackson Lamb and the bad spies of Slough House are caught in a deadly battle between MI5's secret past and its murky future in this gripping, hilarious, and heartbreaking thriller by Mick…