What new truths will Lion and Will uncover on their journey through the many legends of Beatrice? Is the truth of Beatrice as everyone expected, or yet another twist on the Witch's curved path?

Ten Years before the disastrous family reunion on Rokkenjima, a young servant named Yasu started working at the Ushiromiya mansion, where she first encounters the witch Beatrice. Their tenuous friendship utterly transforms the timid, clumsy Yasu and sets her on a path of cunning, deception, and murder...

As detective-and-witch Erika targets all logical errors, Battler charges in head-on as their duel reaches its end. The relationships between Jouji and Shannon, Jessica and Kanon, as well as Battler and Beatrice are also put to the test!

The time for logical debate and magical feints has come to an end; the revelation of the truth about Beatrice the Golden Witch is at hand. To facilitate this, game master Bernkastel has chosen Will Wright the Mage-Hunter to step onto her board and answer a single question: Who killed Beatrice? Joining him in the game is Lion Ushiromiya, Krauss's firstborn and heir, whose role is a mystery in its own right. Will's line of questioning draws together the stray strands from all the previous games, twisting them into a thread of truth, revisiting Kinzou's first encounter with the young Beatrice and working through the legends that have since sprung up around her...

Time holds little meaning for Beatrice the Millennial Witch. Replaying the events leading up to the Golden Banquet again and again only gives her more opportunity to play with her new favorite toy, Battler Ushiromiya. The boy's will to resist the witch remains strong as the curtain rises for a third time on the Ushiromiya family's annual reunion. But as Beatrice pulls more and more players into the game, the strain on Battler's defenses is evident. Do the other members of his family hold the key to solving the witch's riddle and sealing her defeat?!

Six people are dead, and Battler and his remaining relatives slowly come around to addressing the terrifying reality of their situation: Either one of their number is a murderer, or there is a nineteenth person on the island who wants the Ushiromiya family dead. Regardless, the killer seems to be following the inscription beneath the portrait of Beatrice, the instructions for finding the elder Ushiromiya's vast treasure of gold. But each line of the inscription calls for more death, more blood...and the revival of the witch Beatrice herself... Will any remain alive to see the end of this mystery?

As the storm outside darkens, the truth of Natsuhi's past comes to light--the barrenness that prevented her from producing an heir and thus earning the respect of her father-in-law and recognition as an Ushiromiya. But the infant heir who was thought to have died eighteen years ago has apparently returned to torment Natsuhi, toying with her and forcing her to play into a grander scheme of murder. For, even though Battler has solved the riddle of the epitaph, the sacrifices have already been chosen...