There's a hitman on the streets of Glasgow: unpaid & angry, he's decided to settle his own debts. DCI William Lorimer is faced with a string of professional killings, but no witnesses or much conclusive evidence. Criminal psychologist Solly Brightman is off the case due to frustrating budget cuts. But Solly is more closely connected to the murders than he could possibly know... As the hitman plans a bloody ransom to get his fee, the race is on to find out just who hired him
- & who's next on the list.