Health documentary series, presented by Alice Roberts, giving guidance on how to keep the body's organs working at peak performance. The body's biggest organ is under scrutiny - the skin. Alice puts her own outer layer to the test, and runs her face through a computer programme which ages her till she looks 80. She meets Ed, a 22-year-old farmer who is exposing his skin to the hazards of the elements and finds out just what happens when skin cancer needs surgery.