In 1982, 20-year-old Nina Stibbe moved to London to work as a nanny to two opinionated and lively young boys. In frequent letters home to her sister, Nina described her trials and triumphs.
When her best friend of thirty years goes out of reach, seeking professional glory, while her husband seeks immortality, Susan begins to wonder if she has made the right choices about life, love, work and, most importantly, friendship.