In the wake of Adelasia’s resurrection, a sickness begins to consume her mind, body, and soul. With the Coven after the magic she’s stolen from the Well, and old flames returning to the Obsidian Palace, Kaius must accept that he cannot save his mate on his own. With the help of a mysterious incubus named Rowan, and while meeting some old friends along the way, the trio travels through the dangerous Blackwood to face Yekaterina and the Priestesses one final time.