In 1892, New Fiddleham, New England, things are never quite what they seem, especially when Abigail Rook and her eccentric employer R.F. Jackaby are called upon to investigate the supernatural. First, a vicious species of shape-shifters disguise themselves as a litter of kittens, and a day later, their owner is found murdered with a single mysterious puncture wound. Then in nearby Gad's Valley, now home to the exiled New Fiddleham police detective...