New series of this show kicks off tonight, with events unfolding at St George's Hospital in south-west London, which holds one of the world's busiest and most advanced A&E departments. Some of the emergency cases they will meet tonight include a 71-year-old woman who has been knocked over by her husband's car... accidentally... we hope. We also meet 4-year-old Maddi who is brought in with an injured neck after falling over on a train, and doctors worry that metal plates she already had in her neck may have shifted, causing damage to her spine.