Overview: Sir Gerry meets two couples facing tough decisions over what will happen to their children in the event of their deaths. Sarah has two daughters by different fathers. She wants new husband Jason to take on both girls if she dies, but is terrified that her former partner might want to separate the sisters. In the second family, Ian is a polar adventurer, who has been unable to write his will because he and wife Becky can't agree on whose parents would be best to bring up their three young daughters. Both want their own parents to take on the role - but the two sets of grandparents are very different.