Sherlockian detective of the supernatural R. F. Jackaby and his intrepid helper Abigail Rook seek out their ghostly landlady Jenny Cavanaugh’s murderer and fight their most fearsome foe yet in the highly anticipated third volume of this NY Times bestselling paranormal secret series Jenny Cavanaugh, the ghostly landlord of 926 Augur Street, offers enlisted the providers of her detective-agency tenants to solve a decade-old murder–her own. Abigail Rook and her eccentric employer, R. F..LEARNING MUCH MORE on the subject of Ghostly Echoes Jackaby, dive into the chilly case, starting with a search for Jenny’s fiance, who went missing the night she died. However when a new, gruesome murder carefully mirrors the occasions of a decade prior, Abigail and Jackaby recognize that Jenny’s case isn’t so chilly in the end, and her killer could be far more dangerous than they suspected. Fantasy and folklore blend with mad research as Abigail’s race to unravel the mystery leads her across the cold cobblestones of nineteenth-century New England, right down to the mythical underworld, and deep into her co-workers’ grim histories to fight the most fatal foe she’s ever faced.