In Belle Epoque Paris, a monster is murdering powerful men. When the Gendarmes ask the Royal Society for the Study of Abnormal Phenomena for help, they don't expect them to send Samantha Harker. She's a researcher, more used to papercuts than knife fights. Sam is also the daughter of Dracula's killer and can see into the minds of monsters. It's a perilous power, one that could help her crack this case - or have her thrown into an asylum. Dr Helena Moriarty is Sam's reluctant partner, the Society's finest agent who has forged a formidable path in her notorious father's shadow. Professor Moriarty is in hiding, but he still makes his presence known: Hel's partners have a way of dying in mysterious circumstances. From Paris' glittering opera house to its darkest catacombs, the investigation pits Sam and Hel against magic, monsters and men. Beneath their tenuous partnership, something else is growing.