"Bob Comet is a retired librarian, isolated but not lonely, living out his quiet days in a mint-colored house in Oregon, surrounded by his books and small comforts. One morning, out on his daily walk, he performs an act of kindness that brings him into contact with a nearby senior center, where he soon begins volunteering. Here, as a community of peers and friends gathers around Bob, and following a happenstance brush with a painful complication from...