Dorothy is not impressed as Rachel hides out at Janet's, and even Rachel knows deep down that she will have to face her husband soon. The disturbing story of Joe Bevan continues to unfold as the body count rises and the team faces the task of identifying the victims. Joe's daughter Helen faces a tough time as the press interest mounts and she begins to realise the true extent of her father's horrific actions.

In the series finale, the story of Joe Bevan and his house of horrors takes another twist as DCI Gill Murray is kidnapped by someone heavily involved in the case. Their friendship in tatters, DCs Scott and Bailey are forced to pull together in order to save their boss, but face a desperate race against time as Gill is taken to Flamborough Head on the east coast, a beautiful clifftop spot notorious for suicides.