The Mapping of Love and Death by Jacqueline Winspear

In this mystery Maisie faces a lot of changes as Maurice's health begins to fail, Billy's wife comes home after her stay in an institution, and James Compton comes back to town. She's liaising with Scotland Yard in this case, which is one of the better ones as far as the murder mystery parts of this series go, to try to figure out why an American working with a British cartography unit was murdered in the trenches during World War I. I also liked the final developments in Maisie's personal life--they made her seem more human.