“How did you do it? With petrol? Your head isn’t fucking screwed on!” A man with a tanned face hovers over a skinny teenager in shorts and a t-shirt. Nearby, a dark-haired woman, the teenager’s mother, rests her cheek in the palm of her hand. She seems even more perplexed than her son. The kitchen they are in is spotless. A Kremlin calendar hangs on the wall.