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.