Notes

301 pages.
Cover: This game is a matter of life and death.
Summary: Estranged twins Mabel and Kai each receive a mysterious invitation to stay at their elusive grandfather's Parisian chateau. They soon discover that their grandfather is bedbound and dying. His last wish? For the twins to solve a fiendishly difficult puzzle book that no one else has ever been able to crack. The prize? Unimaginable riches. The catch? They are trapped in the house until one of them wins... or dies trying. But the walls are closing in and the game takes darker and darker turns towards the supernatural. Time is running out, and there can only be one survivor.