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...

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...

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?

Each year, the Ushiromiya family gathers at the secluded mansion of its patriarch, the elderly Kinzo. It has been six years since Battler joined his cousins at the annual event, but their happy reunion is overshadowed by worsening weather and an eerie premonition from his youngest cousin-not to mention their parents' feud over the inheritance. Battler doesn't hold much stock in dark omens, nor does he believe the tales of the witch rumored to have given his grandfather a fortune in gold...and who walks the halls of the mansion to this day... But when the eighteen family members and servants are trapped on the island by the raging typhoon, the grisly events that follow leave Battler shaken to his core. Is one of his relatives desperate enough to kill for the family fortune? Or is this the work of the Golden Witch?

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...

It's time once again for the annual family gathering on Rokkenjima! Ange Ushiromiya is just getting over a cold, but that won't dampen her excitement at seeing her cousins again! Granddad couldn't be more thrilled to see his beloved grandchildren and throws a special Halloween party where everyone gets lots of treats! By lunchtime on the first day, the aunts and uncles are chatting up a storm, and the cousins are eagerly planning the afternoon's fun. It's the very picture of a happy family-one that in no way resembles the bickering, bitter Ushiromiya clan! What is going on?!