A naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he’s letting on.

River is trapped in France. Back at Slough House, the Dogs have come for Lamb.

Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather’s house.

Lamb questions David about France as River comes face to face with the enemy.

Impossible decisions are faced and sacrifices are made.

A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.

The chalk-and-cheese detective duo are called to a private clinic where a wealthy patient has been killed. However, their investigation is made all the more difficult by the complex relationships…

When the ship crosses paths with a rogue space station, Ryan and the crew jump at the opportunity to socialize, while Billie angles for help with Avenue 5’s mounting eel…

Sally attends David’s father’s funeral. Eleanor accuses Sally of flirting with recently divorced colleague Nigel. Emma lands a small part in Dan’s film but things go badly on set until…