Contains spoilers for this episode and earlier episodes.
The Shelbys attend Freddie Thorne's funeral, where Ada keeps her distance from the family's wealth and criminal business. Tommy is thinking beyond Birmingham. The betting operation has grown, but he wants premises and influence in London, where rival gangs already control the money. An explosion at the Garrison brings another problem to his doorstep, and the family struggles to understand who is responsible.
Polly is preoccupied with the children taken from her years before. A séance offers her little comfort, and her grief sits alongside Tommy's new business plans. Major Campbell is alive after his encounter with Grace at the station and has returned with a higher rank. Tommy also offers Lizzie a secretarial job, asking her to abandon prostitution and work in an office where she may need to overlook suspicious dealings.
The brothers announce their arrival in London through a violent visit to a club. Their choice draws them into the struggle between Sabini and the Jewish gang based in Camden. Polly warns Tommy that using Arthur's instability as muscle puts his own brother at risk. Sabini's men target Ada and brutally beat Tommy, forcing the cost of the expansion onto the family. Campbell appears at the end of the attack as Tommy lies badly injured.