ON DARK NIGHTS, SOMEONE NEEDS TO LIGHT A FEW FIRES . . . Bodies are piling up with messages carved into their chests. Rival gangs are competing for control. New drugs have arrived in Glasgow, and they've brought a different kind of violence to the broken city. The law of the street is changing and demons from Detective McCoy's past are coming back to haunt him. Can McCoy keep his head up for long enough to deliver justice?