Slough House – the crumbling office building to which failed spies, the ‘slow horses’, are banished – has been wiped from secret service records. Reeling from recent losses in their ranks, the slow horses are worried they’ve been pushed further into the cold, and fatal accidents keep happening. With a new populist movement taking a grip on London’s streets, the aftermath of a blunder by the Russian secret service that left a British citizen dead, and the old order ensuring that everything’s for sale to the highest bidder, the world’s an uncomfortable place for those deemed surplus to requirements. The wise move would be to find a safe place and wait for the troubles to pass. But the slow horses aren’t famed for making wise decisions.@HachetteUK

A key member of a Downing Street think-tank has disappeared without a trace. Claude Whelan, one-time First Desk of MI5’s Regent’s Park, is tasked with tracking her down. But the trail leads straight back to Regent’s Park HQ itself, with its chief, Diana Taverner, as prime suspect. Meanwhile her Russian counterpart has unexpectedly shown up in London but has slipped under MI5’s radar. Over at Slough House, the home for demoted and embittered spies, the slow horses are doing what they do best: adding a little bit of chaos to an already unstable situation. In a world where lying, cheating and backstabbing is the norm, bad actors are bending the rules for their own gain. If the slow horses want to change the script, they’ll need to get their own act together before the final curtain.