Jenny Cavanaugh, the ghostly landlord of 926 Augur Lane, has enlisted the services of her detective-agency tenants to solve a decade-old murder--her own. Abigail Rook and her eccentric employer, R. F. Jackaby, dive into the cold case, starting with a search for Jenny's fiance, who went missing the night she died. But when a new, gruesome murder closely mirrors the events of ten years prior, Abigail and Jackaby realize that Jenny's case isn't so cold...