: Jackson Lamb (Gary Oldman) investigates the suspicious circumstances surrounding the death of a team member, while River Cartwright (Jack Lowden) infiltrates a potential sleeper agent cell. Character Highlights

: Continues his crude but brilliant leadership at Slough House, navigating past betrayals.

: Critics from Rotten Tomatoes and IMDb praise the episode for its "dark wit" and "relentless momentum".

: The episode centers on the "Cicada" program, a Cold War-era Soviet sleeper agent operation.

: Faces difficult family loyalties while tracking leads in the English countryside.

: Common Sense Media notes the episode contains mature humor, physical violence, and kidnapping.