The RTS award-winning documentary series returns for a 12th series following patients treated in the same 24 hour period at St George's in south west London. The hospital has one of the most advanced and busiest A&E departments in the world, and is a place where stories of life, love and loss unfold every day. The opening episode focuses on the bond between patients and their loved ones who watch over them no matter what. Mel, 71, is rushed to St George's after being accidentally knocked down and run over by her husband John. Mel's blood pressure drops critically low and doctors call a 'Code Red' putting her on standby for an emergency blood transfusion. John talks about how their 49 year marriage began when they met at Butlins in Skegness. He was a kitchen porter, she was a chalet maid, and he brought her the best food from the kitchen to rejuvenate her after a bout of food poisoning.