James has been easing into his new life. One where he is not insane and supernatural creatures exist. He sets off for Paris to join his lover, the Lybrid Nicolas, and is given more than one unexpected welcome from Nicolas’ associates. Meanwhile, Nicolas decides to take an old friend up on a request he’s been making for years to investigate a decades long series of murders and disappearances in the marshlands of France. James is thrilled to tag along, and soon they’re knee deep in folktales and deceit. Solving the mystery of the Hellhound will exact a steep price—broken oaths, broken friendships…and someone’s life.