"What happens when an old spook starts to lose his mind? Do the Services have a retirement home for people who know too many secrets but don't remember they're secrets? Or does someone come to take care of the senile spy for good? These are the questions River Cartwright must ask himself as his grandfather--David Cartwright, a Cold War-era operative--starts to forget to wear pants, and starts believing everyone in his life is someone sent by Services...

"If Spook Street is where spies live, Joe Country is where they go to die. In Slough House, the London outpost for disgraced spies MI5, memories are stirring, all of them bad. Catherine Standish is buying booze again, Louisa Guy is raking over the ashes of lost love, and new recruit Lech Wicinski, whose sins make him outcast even among the slow horses, is determined to discover who destroyed his career, even if he tears his life apart in the process....