1978, Scotland. An ambitious killer hunts neighbourhood pets before seeking larger prey. As Detective Burnet battles to find the truth, her search leads to a bloody, terrifying conclusion . . .
Newly assigned to CID, Elizabeth Burnet is seen as just a pretty face. So when she stumbles across evidence of a serial killer, dubbed "the Werewolf", her theories are dismissed. The only person who believes Burnet is a former detective with his own exposing corruption within Tayside Police. Together, they realise that some in the force have reasons for sweeping recent deaths under the carpet.