Mid-winter, St. Andrews, Scotland: When a university lecturer fails to turn up for class, he is found dead at home, with evidence of having committed suicide. A female student reports to the police that she was having an affair with him and knows he would never commit suicide. Toxicology results turn up Class A drugs in his system, and DCI Andy Gilchrist and his associate, DS Jessie Janes, are called in to investigate. The initial enquiry...