More than 400 patients are treated in a busy 24 hours at King's. Peggy, who's 85, arrives by ambulance with her doting husband Clement. She's fallen at home and hurt her knee. It's the second time she's fallen in two months and medics want to find out if there's something more serious going on. Peggy suffers from Alzheimer's, and Clement reminisces about their life together, including how he proposed to her by accident. But he knows her condition is getting worse. Bob, who's 75, arrives by ambulance after a suspected heart attack. He has a history of heart disease and has had a triple bypass. The medical team are keeping him under a close watch. Bob talks about the pros and cons of being an older father to his 25-year-old son Matthew, who reflects on being a young boy with a dad people assume is your granddad. And they both contemplate the future. Meanwhile brothers Ben and James arrive at King's after a night out in the West End. Ben's finger has become very swollen and painful. The 25-year-old isn't overly concerned, but the doctor diagnoses cellulitis. It can be serious - and could lead to potentially fatal septicaemia - so Ben will need to be seen by a plastic surgeon and have an operation.