Timothy Warner, a PhD student who goes by the nickname "Moth," wakes up on his ninety-ninth day of sobriety with an intense craving for drink. He asks his uncle Ed, a former alcoholic and now successful psychiatrist, to meet him at an AA meeting later that day. When Ed doesn't show up, Moth bikes to his office and discovers a grisly scene -- his uncle lying in a pool of blood, shot through the temple. The police pronounce the death a suicide, but...