A medical slueth mystery. From the cover:
Only the victim was not under suspicion. Dr. Jean Montrose had made her house calls to Lord Aviemore's estate many times. Only this time, the visit was dreadfully different. Inside the elegant mansion the damaged and lifeless body of the blue-blooded heir was a terrible sight. Detective Inspector Doug Niven of the Perth police suspected the victim's father, Dempster Lumsden, ex-playboy, confirmed alcoholic, and unfaithful husband to his beautiful society wife. But with Dempster mysteriously missing, Dr. Jean Montrose - a tiny dynamo of a physician, who combined an expertise in forensics with a skill in snooping - turned her experienced eyes toward the Lumsden's glittering circle of young aristocrats. What she found beneath the gold facade of the Scottish gentry were tarnished souls and shocking sins ... but what she searched for was the one heart dark enough to kill.