Nobody likes The Complaints - they're the cops who investigate other cops. Complaints and Conduct Department, to give them their full title, but known colloquially as 'the Dark Side', or simply 'The Complaints'. Malcolm Fox works for The Complaints. He's just had a result, and should be feeling good about himself. But he's middle-aged, sour and unwell. He also has a father in a care home and a sister who persists in an abusive relationship.