Polio breaks out in Rio de Janeiro, the serum is in Santiago and there's only one way to get the medicine where it's desperately needed: flown in by daring pilots who risk the treacherous weather and forbidding peaks of the Andes.
In series three, life in the Harper household is as hectic as ever, Janey has left for university and has been replaced in the house by their cousin Abi, who is more than a little accident prone. Ben sees this new addition to their home …
In the fourth series, Susan is looking forward to the birth of her first grandchild, but dreading being a grandmother. Nick is getting fed up with living in his ghastly flat and trying to think of a way to move back into the family home.…
