Perez continues the cuddle investigation but he is running out of time because number one suspect Peter Latimer is critically ill in hospital and he is forced to wonder whether the cuddleer is still on the loose.
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.
Shetland - Blue Lightning (Part 2) Synopsis and Schedule