Katrina, 28, has been hit by a car while crossing the road. Her legs are badly broken but trauma team leader Richard Fawcett worries she might also be suffering from other internal injuries that could put her life at risk. Forty-two-year old Michael has had his second heart attack in two weeks, so staff act quickly to remove a blood clot, and 72-year-old Trevor is brought in after falling off a shed roof. He is losing lots of blood from a head wound, but even worse, he may have broken his neck