The Skeleton in the Closet — Angie Fox

A haunted library is no place for a girl who can see ghosts, but when Verity Long stumbles on a dead body in the middle of the main reading room, she has to believe someone…even a dead someone…must have witnessed the crime. Her ghostly sidekick Frankie warns her to stay out of it. The very alive, very handsome deputy sheriff, Ellis Wydell, inadvertently places her directly in the middle of it. And her ex-fiancé, Ellis's brother, is back with an agenda of his own. Undaunted, Verity presses forward, uncovering scandalous secrets, long-forgotten ghosts, and a shocking trail of clues that places her directly in the path of a killer.