Edinburgh Detective Sergeant Bruce Robertson, a scheming, manipulative, misanthropic bully, spends his free time indulging in drugs, alcohol, abusive sexual relationships, and "the games" – his euphemism for vindictive plots he hatches to cause trouble for people he dislikes, including many of his colleagues in the Lothian and Borders Police.

He only shows genuine warmth to Mary and her young son, the widowed wife and child of a man whom he tries and fails to resuscitate after he suffers a heart attack in the street.

As the story begins, Bruce's main goal is to gain a promotion to become Detective Inspector (DI), the path to which appears to open when he is assigned to oversee the investigation into the murder of a Japanese exchange student.

It is ultimately revealed through dream-like exchanges with Dr. Rossi, Bruce's psychiatrist, that he is on medication for bipolar disorder and has repressed immense feelings of guilt over a childhood accident that led to the death of his younger brother.

These domestic issues sparked his desperate bid for promotion, played a part in his unusual displays of kindness toward Mary and her son, and have also led him to start cross-dressing as his wife when off duty in order to "keep her close" to him.