Tina is shocked when Dominic offers her a chance to ride Blackout in a big race. A race Blackout must win if Jackie is to sell the horse and save the farm. But Dominic's agenda seems increasingly sinister. As the police continue their search for the killer, tensions between the investigation and the traveller community hit an all-time high. Ruth is caught in the crossfire, and her uneasy relationship with Dominic reaches crisis point. Eli, meanwhile, intercepts a message on Chris's phone about Cal, and he arranges a meeting with the anonymous sender, but finds himself in danger.

James is in custody and the police remain convinced that James is guilty, but Ruth has doubts that draw her to Elizabeth Marshall's hospital bedside. James uses his one call from the police station to reach his friends. He needs someone to contact a mysterious man who will be able to provide him with an alibi. Rob isn't convinced James's plan will work, but finds himself on a dangerous mission.

There have now been three murders. James remains in police custody, but the investigation is in disarray. With Ian dead, Ruth is removed from duty on the murder squad and placed back on the beat, where she finally has to confront the possibility that she will never find Cal's killer. Meanwhile, Eli visits his father in prison to tell him some surprising and unwelcome news. Tina hatches a plan to leave town, but can she persuade Eli to escape the murky world of Overton before the mystery of Cal's death draws him back in?

The police throw Ruth a party to celebrate her success in bringing James in. Ruth has doubts that takes her to Elizabeth Marshall's hospital bedside. James uses his one call to contact his friends. He requires one of them to get in touch with a mysterious man who will be able to give him an alibi.