Perez makes a return to the Shetland island of Fair Isle following the murder of a scientist. Tensions increase after a storm on the mainland forces him to work in complete isolation with all of the murder suspects being forced to stay on the island in close proximity to each other.
Elenco: Douglas Henshall , Alison O'Donnell , Steven Robertson , Mark Bonnar , Erin Armstrong , Julie Graham , Julia Brown , Fiona Bell , Neve McIntosh , Gerard Miller , Stephen Walters , Lewis Howden .