In Episode 17: In the Otherworld, Mabon is joined by Corvus and they hurry through the hollow hill to find Elfyth in the grip of a furious winter storm, the work of the Grayman. After learning that Goewyn is to be made a blood sacrifice to Badb in a last-ditch effort to stave off the Grayman’s assault, Mabon leads the King and Merlyn to her rescue. But Evnyssian and Cerridwen resist, and a bloody battle ensues.