The second instalment of Kate Mosse's best-selling novel adapted by Adrian Hodges and starring John Hurt, Katie McGrath, Matthew Beard, Jessica Brown Findlay and Vanessa Kirby. Parallel storylines from the past and present unfold in the southwest of France. Ancient and modern-day conspiracies are unearthed, revolving around three hidden books that hold the secret of the true Grail. Alaïs and those closest to her must battle to protect the secret, while in the present day Alice faces a race against time to piece together her long-buried history.