The Boundary in the Books (The Casebound Bookshop Mysteries Book 1)

Retired Manhattan white-collar defense attorney Cassie Mercer buys a house in coastal Maine for a quieter life. The catch: a quirky used bookstore is attached, complete with regulars, crooked floors, and a spaniel in the deed. Then a box in the back room points to murder, and Cassie starts asking the wrong questions. First in series.