When a young archaeologist discovers a set of human remains, the Shetland community is intrigued to know if it’s an ancient find or a contemporary mystery. And when an elderly woman is shot on her land in a tragic accident, Perez and his team find themselves at the centre of two feuding families whose envy, greed and bitterness has divided the surrounding community.

The team review a past crime to solve a murder, Perez investigates an old friend's death in a car accident and a scientist is killed at the Fair Isle bird observatory.

When a young man disappears on the Aberdeen to Shetland ferry crossing and a small boy ends up in intensive care, DI Jimmy Perez and his team investigate; becoming convinced the two events are connected.

A convicted killer's return to Shetland after 23 years in jail coincides with the murder of a local journalist and Perez and his team must investigate both cases.

A human hand washes up on a Shetland beach. A few hours later, more body parts are discovered in a hold-all that has been dumped at sea. The victim is identified as a young Nigerian man, spotted in Lerwick a few days before. In investigating his murder, DI Perez becomes involved in the search for a vulnerable young woman, leading him to uncover a complex network of human trafficking across Scotland’s remote rural communities.

Perez and his team investigate the doorstep murder of a leading figure on Shetland.

The disappearance of a vulnerable young man draws Perez into the secret past of a family new to Shetland and reveals an unimaginable threat to his community.

Series 8 sees Met Police Detective Inspector Ruth Calder return to her native Shetland to retrieve the vulnerable witness to a gangland murder. Tosh must pause her investigation into a string of mysterious animal deaths to help Calder find the witness before it’s too late.