In Belle Epoque Paris, a monster is murdering powerful men.

Stopping it may be a woman's job.

A researcher at Royal Society for the Study of Abnormal Phenomena, Samantha Harker is more used to papercuts than knife fights. She also harbors a special power, allowing her to into the minds of monsters. It could help her crack this case - or have her thrown into an asylum.

Dr Helena Moriarty is the Society's finest agent who has forged a formidable career, despite the looming shadow of her notorious father. Where Hel's partners have a way of dying in mysterious circumstances, the recluse Professor Moriarty doesn't seem far behind.

From Paris' glittering opera house to its darkest catacombs, the investigation pits Sam and Hel against magic, monsters, and men. And beneath their tenuous partnership, something else is growing . . .

The worlds of Dracula and Sherlock Holmes collide in this thrilling exploration of feminine power.