"By Book or By Crook" by Eva Gates

For ten years Lucy has enjoyed her job poring over rare tomes of literature for the Harvard Library, but she has not enjoyed the demands of her family's social whorl or her sort-of engagement the the staid son of her father's law partner. When her ten-year relationship implodes, Lucy realizes that the plot of her life in in need of a serious rewrite.

Calling on her aunt Ellen, Lucy hopes that a little fun the the Outer Banks sun - and some confections from her cousin Josie's bakery - will help clear her head. But her retreat quickly turns into an unexpected opportunity when Aunt Ellen gets her involved in the lighthouse library tucked away on Bodie Island.

Lucy is thrilled to land a librarian job in her favorite place in the world. But when a priceless first edition Jane Austen is stolen and the chairman of the library board is murdered, Lucy suddenly finds herself ensnared in a real-life mystery - and she's not so sure there's going to be a happy ending...