The misfit agents of Slough House are dragged into a fresh crisis when a series of bizarre, seemingly random attacks rattle London. As public panic grows, suspicion falls on Roddy Ho's (Christopher Chung) mysterious new girlfriend.
With political pressure mounting and MI5 under fire, Jackson Lamb (Gary Oldman) must cut through the chaos to uncover the truth. Lamb, River (Jack Lowden) and the entire team set on a mission to probe whether these incidents are acts of terrorists, extremists or someone much closer to home.
Depicting real-world issues
The satirical espionage-thriller delves into real-world issues amid conspiracies, threats, investigations and mysteries. The series emphasises political violence, online radicalisation, the dark web and anti-immigrant sentiments, a crucial theme