No EscapeThis isn't just a puzzle. It's a lethal game of survive or die Estranged twins Mabel and Kai each receive an unexpected invitation to stay for a week at their grandfather's Parisian chateau. Neither remembers meeting their grandfather, and neither had any idea that he was still alive. The author of a notoriously difficult puzzle book, their grandfather is bed bound and dying. His last wish? For Mabel and Kai to solve it. The prize: unimaginable