Overview: A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.
Overview: A naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he's letting on.
Overview: River is trapped in France. Back at Slough House, the Dogs have come for Lamb.
Overview: Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.
Overview: Lamb questions David about France as River comes face to face with the enemy.
Overview: Impossible decisions are faced and sacrifices are made.