Max, 16, is brought to King's College Hospital by air ambulance after falling 14ft onto his face at a skate park, and the results of the CT scan show a life-threatening bleed on his brain, meaning the next 12 hours are critical, as well as being an agonising wait for his parents. Meanwhile, 13-year-old Hector has injured his hip playing football and needs an X-ray to confirm whether his leg is broken.