The Last Will of Moira Leahy, by Therese Walsh

Twenty-five-year-old Maeve Leahy, professor of languages at Betheny University in New York State, has set up a straight and narrow path for herself. She devotes herself to her job, has two good friends, and never goes home to Castile, Maine. Her roommate Kit is a first-year resident and her best friend since childhood. Her other friend, met in college, is Noel, a painter whose father owns an antique store in town.

The person who is missing is Moira, the identical twin sister Maeve lost nine...