Shetland

DI Jimmy Perez and his team investigate the murder of a teenage girl whose body was found on a secluded beach. Under suspicion is Magnus Bain, a local recluse, who had forged an unlikely friendship with the victim and whose home overlooks the crime scene. But then the public prosecutor draws attention to an unsolved case from 19 years ago of a girl who disappeared which has strong similarities to the new case.

The discovery of seven-year-old Catriona's body after almost two decades prompts DI Perez to take Magnus in for further questioning. Perez re-examines the evidence and discovers that Catriona had a secret hiding place at her old home - the same house where Catherine also lived. 2014 ITV

A scientist is found dead in the bird observatory on Fair Isle, Perez's childhood home, so he takes Tosh and makes his way across to the island, where he is greeted by his father - just before flights are grounded by incoming storms. Working alone and without a forensic team, the detectives talk to the victim's friends, family and colleagues - and as tensions run high, the storm forces Perez and the suspects to remain together under a single roof. 2014 ITV

Time is running out for Detective Inspector Perez as prime suspect, Peter Latimer, lies critically ill in hospital. Was the fire a drunken accident, or was Peter Latimer the second victim of a murderer still free on Fair Isle? 2014 ITV

A journalist dies in a suspicious car accident, and when it turns out he was an old friend of Perez, a forensic scientist is called in to ensure an objective view of the case. As the team awaits her results, they look into the reasons for the victim's return to the island, and find he was chasing a lead about plans for a controversial new gas pipeline.

The discovery of John Henderson's body leads DI Perez to wonder if this second killing is linked to the death of his journalist friend Jerry, a theory given greater weight by forensic investigator Willow Reeves' finds. But then the case takes another surprising turn with the arrival of Jerry's fiancee, carrying a memory stick he gave to her for safekeeping several weeks earlier. 2014 ITV