Slow Horses follows the story of a group of British intelligence agents who serve in a dumping ground department of MI5 called Slough House after the big mistakes they've made that resulted in the end of their mainstream careers.This quick-witted spy drama follows a dysfunctional team of M15 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.