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 Thomas, the obnoxious owner of South Cove's most popular tourist spot, The Castle, makes it his business to contest her claim. When Thomas is found murdered at The Castle shortly after a heated argument with Jill, even her detective boyfriend has to ask her for an alibi.