It's the greatest literary mystery of all time: Who wrote the works of William Shakespeare? Although the official story of a Stratford merchant writing for the London box office has held sway for centuries, questions over the authorship of the plays and poems persists. Derek Jacobi leads an impressive cast featuring Vanessa Redgrave and Mark Rylance on a quest to uncover the truth behind the world's most elusive author, and discovers a forgotten nobleman whose story could rewrite history.