Mr. Barbour is an eccentric but kind man from a wealthy, esteemed family. He is obsessed with water and sailing, despite the fact that his sister drowned in a sailing accident. Mr. Barbour has bipolar disorder, a condition that first began seriously interfering with his life while he was at Harvard Law School. Although there are periods of his life when his condition is stable, Mr. Barbour’s manic episodes become increasingly intense while his youngest children, Kitsey and Toddy, are in college. He ends up taking his sons Andy and Platt out on an ill-advised sailing trip while in the grip of mania; the boat capsizes, and he and Andy die by drowning.