Three can keep a secret : a Greer Hogan mystery
(Book)

Sequel to: Shadow in the glass.

When Anita Hunzeker, chair of the library board of trustees, is run off the road and killed, no one seems all that sorry. Anita was widely disliked, and the townsfolk would just as soon be rid of her. When a local professor turns up dead as well, his connection to Anita and to other local residents leaves the suspect pool covering the entire county. Librarian Greer Hogan starts poking around, and unearths a clue in the old manor cemetery. It leads to a cache of dark secrets stretching back decades-- secrets that could rock the town to its core. -- adapted from jacket