When the local mailman inherits a haunted mansion and demands an exorcism, bookshop owner Pen must act fast to save her favorite ghost - 1940s detective Jack Shepard - before it's too late.

Young widow Penelope Thornton-McClure and her old Aunt Sadie are making ends meet by managing a mystery bookshop--a quaint Rhode Island landmark rumored to be haunted. Pen may not believe in ghosts, but she does believe in good publicity--like nabbing Timothy Brennan for a book signing. but soon after the bestselling thriller writer reveals a secret about the store's link to the 1940s murder, he keels over dead--and right in the middle of the store's...