Bachelor's Puzzle

Elise Ferguson, Tyler's head librarian, has slipped uneventfully into middle-aged spinsterhood. But lately she's been seen in the company of Robert Fairmont -- the distinguished-looking visiting professor of architecture... Elise's sister, Bea, is certain Robert must have ulterior motives. After all, why would any man be interested in Elise? Bea's snooping uncovers more than even she bargained for -- and threatens everyone's happiness.