A 19-year-old casualty is stuck 150 feet down cliffs in the north of Shetland. The deteriorating weather makes the rescue extremely challenging, and the team are concerned he may succumb to hypothermia. Dr Lalla reopens a nasty wound when patient Martyn is transferred by helicopter to hospital from his oil rig. He sliced his hand open with a metal grinder, and Dr Lalla is concerned about serious infection. Farmer Derek arrives in A&E having been trampled by a calf. Nurse Thelma Irvine needs to find out whether his cheek and nose have been fractured by the bovine bashing.