The series, renowned for its amazing photography and views of Shetland, starts on a “windswept hillside” as a young man waits for someone.

A few days later, a jogger on her morning run discovers a severed hand on the beach – and a holdall containing further body parts are found at an inlet nearby. The investigation takes a “sinister turn” when the team identifies the victim and begins to start to scrutinise his emails and social media accounts…

Don’t miss the wonderful Steven Robertson as DC Sandy Wilson in Series 5 -  which starts on Tues 12th Feb , 9pm on BBC1