Jill Gardner, proprietor of Coffee, Books, and More, has discovered that the old stone wall on her property might be a centuries-old mission worthy of being declared a landmark. But Craig Morgan, the obnoxious owner of South Cove's most popular tourist spot, The Castle, makes it his business to contest her claim. When Morgan is found murdered at The Castle shortly after a heated argument with Jill, even her detective boyfriend has to ask her for an alibi. Jill decides that she must find the real murderer to clear her name. But when the killer comes for her, she'll need to jump from historic preservation to self-preservation.