John Bachelor is the saddest kind of spy: not a joe in the field, not even a desk jockey, but a milkman—a part-time pension administrator whose main job is to check in on aging retired spies. Late in his career and having lost his wife, his house, and his savings after a series of unlucky choices, John's been living in a dead man's London apartment, hoping the bureaucracy isn't going to catch up with him and leave him homeless. But keeping a secret among spies is a fool's errand, and now John has made himself eminently blackmailable.
London, England: Slough House is where the washed-up MI5 spies go to while away what's left of their failed careers. The "slow horses," as they’re called, have all disgraced themselves in some way to get relegated here. Maybe they messed up an op badly and can't be trusted anymore. Maybe they got in the way of an ambitious colleague and had the rug yanked out from under them. Maybe they just got too dependent on the bottle—not unusual in this line of work. One thing they all have in common, though, is they all want to be back in the action. And most of them would do anything to get there─even if it means having to collaborate with one another. [more inside]