Thomas Walz tells the story of Bill Sackter, a man who spent nearly half a century in a Minnesota mental institution and emerged to blossom into a most unlikely celebrity. Bill Sackter was committed to the Faribault State Hospital at the age of seven, there to remain until he was in his fifties. At the time of his commitment, Bill's father had recently died; thus his sole contact with his family came through rare letters from his mother. Some...