Kevin follows elite flight paramedics as they deliver high level emergency care at the scene of a night time road crash.
Dedicated surgeons serve a community where gun violence is normal. Kevin discovers a combination of high tech medicine and good old fashioned heart.
Kevin returns to the Kings hospital, now one of London's designated major trauma centres, where he spent several years as a doctor.
The Charlotte Maxeke Hospital is the place where young doctors from all over the world go to learn how to do trauma medicine.