When Wildlife Officer Harry Clark is seconded to Cumbria Constabulary to assist in
an investigation of sheep rustling, he is unaware that a young police officer from
Kirkby Stephen has disappeared in a blizzard. Soon he is joining the search team
Sergeant Nina Featherstone jumps at the opportunity of working undercover to expose the trade in illegal meat but the forensic evidence provided to Dr Mills Sanderson is obtained in an unorthodox fashion and threatens to jeopardise the case.