The Handmaid's shameful affair with the dashing but unscrupulous Captain of the Guard leads indirectly to her own undoing, as she soon finds herself accused by the people of Camelot of being a witch! Horrified at the terrible fate which might befall her, she is ultimately saved by the shrewd cleverness of the only man in the kingdom who can sway King Arthur: none other than Merlin the Magician.

Sent to the castle's terrifying dungeon instead of being handed over to the evil Monks from The Inquisition, she now must find a way to survive and escape—even if the chances of doing so are all but hopeless. For she is now at the mercy of the terrifying creature who dwells within the hellish depths of Camelot's secret underworld...a world that exists in the caverns and caves below the castle.