Shetland

After the discovery of an unknown body the search for the missing person grows increasingly desperate, and Perez delves into the Cairns family's murky past.

Perez follows Danny Cairns on a perilous journey through his secret past, while the unusual behaviour of local librarian Murry Rankin attracts the attention of Tosh and Sandy.

As Perez tries to reassure Rachel that the horrific discovery might not be linked to her son Connor's disappearance, Danny suddenly flees Shetland, raising suspicions.

In Ayrshire, Danny ambushes the Waldron family, accusing them of kidnapping his son. With Perez on Danny's trail, the altercation with the Waldrons leads the desperate father towards the criminal underworld and a shocking revelation about his past.

Meanwhile, back in Shetland, Rachel's hope is tested while Bryd desperately hunts for Connor. Just as Bryd's about to make a startling confession to the police, she's lured away by a surprising text.

Perez and Meg grow closer but their happiness is interrupted by a chilling call - another body has been found and, this time, the victim is all too easy to identify.