Contains spoilers for this episode and earlier episodes.
Tommy emerges from hospital after a long recovery and resumes the Russian operation. He brings Alfie into the dealings over the aristocrats' jewels, seeking knowledge and an assessment of what they hold. A visit to the Russians' house turns into a night of excess. Arthur is drawn into sex despite his marriage and faith, while the brothers continue their business among people who treat cruelty and humiliation as entertainment.
Polly's relationship with Ruben becomes intimate, offering her a private connection outside the company. Michael's own connection to the conspiracy is more painful. He reveals that Hughes abused him when he was in the care of the parish and wants to kill the priest himself. Tommy agrees, treating the request as a personal claim on a man the family already has reasons to oppose.
Tommy recruits former tunnelling comrades to reach the strong room beneath the Russians' property. Their wartime experience now serves a robbery, with a new tunnel intended to bypass the locked route from the house. Polly learns why Michael wants Hughes dead but refuses to accept her son's participation. She warns Tommy that she will bring the organisation down if Michael pulls the trigger. The practical preparations proceed while the family remains divided over who should carry out the killing.