When Tom Crane and Anne Reynolds are sent to help the mysterious Paris branch of Department 7 with their investigations, they have no idea how quickly they will get swept up in the unfolding horror. Something dark and rotten is lurking beneath the beauty of the Jardin des Plantes and two young girls are already dead… As Tom finds himself plagued by perplexing visions of the ghostly Morag, he becomes sure that his worst nightmares are coming true. But can Edward Drexel really be behind this? Or is it someone - or something - even worse?