Death knock - Frederic Lindsay

When the body of a woman in evening dress is discovered in the upstairs bedroom of a suburban house, DI Meldrum is summoned to the scene of what is to become his most baffling murder case yet. On closer inspection, the corpse turns out to be that of a man, Brian Ashton, a prominent member of Edinburgh's financial establishment. The house where he's been found belongs to Ashton's wife from whom he's been separated for over three years. What he was doing there remains a mystery. Henry Stanley, a local academic who's put his skills at the service of a number of murder enquries, comes up with a profile of the killer as a woman, and one who might kill again. Meldrum's investigations of Brian Ashton's life and background lead him to a handsome small estate on the city's outskirts. As the hot summer goes by, Meldrum moves towards a solution which may have unwelcome implications for him both personally and professionally.