Famed author ARTHUR CONAN DOYLE must push aside his skepticism of the supernatural with the emergence of SPRING HEELED JACK, a mysterious phantom of urban legend. This sets in motion the revival of THE INSPECTRES, a secret society devoted to the investigation of the occult, and brings together, alongside Doyle, HARRY HOUDINI, BRAM STOKER, and ten-year-old AGATHA CHRISTIE to save London from a deadly, paranormal event.