““The dusk light is impossibly bright. Timothy Squire is still pale, casting backwards glances as we run. After we are well free of the neighbourhood, I gesture for him to stop. 'You all right?' he pants. I time it perfectly, and my fist connects, hard, with his stomach. He stumbles, falls to his knees on the wet pavement. Although his grip is strong I have taken him by surprise, and soon the knife is in my hands.””