On the Isle of Lewis, police hunt for suspected salmon poachers. In Glencoe, PC Stephen Cooper pursues a missing person case, and in Inverness, cops conduct drug raids in the city.

Bomb disposal are called in when a chemical lab is found in a flat. police search for missing walkers in Glencoe, and wildlife cops investigate an attack on a bird of prey.

A team of police travel to the Outer Hebrides to search through the snow for a missing 16-year-old. In Shetland, the cops have to deal with Viking revellers and a drunk driver.

Police investigating the disappearance of a popular barman find human remains near Aviemore. In Caithness, cops are shocked to discover tropical animals in a derelict house.

Police deal with a tragic accident on the A9, one of the Highlands’ busiest and most dangerous roads. Meanwhile, officers hunt for a wanted man in the dark forests near Fort William.

Police on Skye raid an abandoned house they suspect is being used to grow cannabis and deal with a three-car accident that has caused chaos on the island’s main road.