Power is up for grabs as the Harrigans and Stevensons, two warring London crime families, clash in a kill-or-be-killed battle that threatens to topple empires and ruin lives. Caught in the crossfire is Harry Da Souza, the street-smart 'fixer' as dangerous as he is handsome, who knows too well where loyalties lie when opposing forces collide. As kingdom goes up against kingdom, lines will be crossed - and the only saving grace is a bet-your-life guarantee: family above everything.

Stick or Twist
Harry Da Souza is called upon to make a problem disappear after a night out goes awry for the sons of two warring crime families. As boss Richie Stevenson looks to pin blame, patriarch Conrad Harrigan gathers his clan with a plan.

Jigsaw Puzzle
Harry deals with the aftermath of the Harrigan family meeting as Jan wonders what's the final straw.

Plan B
As Kevin prepares for all-out war, Harry kills two birds with one stone.

Rat Trap
Harry pays a visit to Antoine at the urging of Bella; Fisk and Mukasa trade theories.

Funeral for a Friend
Kevin and Harry assess scenarios in a search for insurance and an exit strategy.

Antwerp Blues
In the aftermath of Plan B, Conrad twists the knife and Fisk has a realization: this is war. Maeve gives Eddie a lesson in the art of chess. Richie takes the bait. Harry goes searching for Seraphina and Brendan, who've gone rogue.

The Crossroads
In the Cotswolds, O'Hara points out the elephant in the room. Maeve pivots, testing Conrad's resolve. Alice comes to Jan for a favor. Eddie and Gina make common cause. Harry, with the clock ticking, takes extreme measures.

Helter Skelter
Maeve extends an olive branch. Kevin questions the wisdom of a sit down with Jaime. Tattersall offers Fisk and Mukasa a new point of entry. Harry comes to Kat for a favor as Richie, at the Sinful Monkey, contemplates a new affiliation.

Beggars Banquet
Bella does a runner to London. Tattersall gets Alice's tootsies tapping. Kevin confronts his past. The Harrigans sit down for a normal family dinner.

The Beast in Me
Kevin takes care of a problem. Tattersall delivers on a promise as Richie prepares for war. Seraphina, reading the room, agrees to a meet and greet. Maeve spills the tea. Jan gets Harry's attention. Season finale.