Dr Hilary Jones examines how Birmingham Children's Hospital has helped to revolutionise the treatment of sick children. He learns how the training of paediatric doctors and nurses has been transformed over the 70-year history of the NHS, and meets the doctors whose groundbreaking surgical techniques have helped to save thousands of young lives. He tracks down former patients, including the Rozycki sisters who, almost 50 years ago, became the first conjoined twins in Britain to be successfully separated. And he reveals how the hospital saved the life of his own granddaughter.