Using small-town life as a springboard to explore the loftiest of ideas, Haven Kimmel’s irresistibly smart and generous first novel is at once a romance and a haunting meditation on grief and faith. Langston Braverman returns to Haddington, Indiana (pop. 3,062) after walking out on an academic career that has equipped her for little but lording it over other people. Amos Townsend is trying to minister to a congregation that would prefer simple...