One year after a rift divides the Shelbys, they become targets of a Mafia vendetta, forcing the family to reunite and seek help from a shady new ally.

1. The Noose 58m At Christmastime 1925, members of the fractured Shelby family get word that the New York Mafia is coming to avenge murders they committed a year ago.

2. Heathens 58m Reeling from their loss, the Shelbys gather in Small Heath, where Tommy calls for a family truce in order to launch an offensive against the Mafia.

3. Blackbird 59m Linda tries to distract Arthur, who later gets caught in an ambush. Tommy is reminded of who he was before the war. Polly meets a man from her past.

4. Dangerous 57m The Mafia tries to lure one of the Shelbys into a trap. Tommy is visited by an old flame. Lizzie receives unexpected news.

5. The Duel 57m Despite being outnumbered, Tommy starts a shootout with the Mafia. Luca Changretta approaches Alfie Solomons. The British military seeks out Ada.