The Long Way Home: Chief Inspector Gamache, Book 10

There is a balm in Gilead," his neighbor Clara Morrow reads from the dust jacket, "to make the wounded whole." While Gamache doesn't talk about his wounds and his balm, Clara tells him about hers.

Peter, her artist husband, has failed to come home.

Failed to show up as promised on the first anniversary of their separation.

She wants Gamache's help to find him.