A doctor is shocked when a young woman arrives in resus with life-threatening swelling on her brain following a random attack by a stranger on the streets, while a mother faces an agonising wait as tests are carried out on her 12-year-old son, who was hit by a car and airlifted to King's by emergency medics. A 90-year-old former circus performer is also in A&E after collapsing at home, and news of his colourful past quickly circulates among the staff.