Bookstore owner Shelby Cox heads to nearby Blye castle for a book signing by successful True Crime writer Savannah Page. But crime becomes all too true for Savannah. Her body turns up the next morning, in a secret passage at the bottom of the stairs. The last thing Shelby Cox wants is to sleuth another murder, but she's intrigued about how a killer could have reached the island after hours. She's not at a lack for suspects either. Can Shelby keep regular store hours, elude the police chief, and assemble the clues into a hard-bound case without getting permanently shelved?