On the planet of Ranskoor Av Kolos, lies the remains of a brutal battlefield. But as the Doctor, Graham, Yaz and Ryan answer nine separate distress calls, they discover the planet holds far more secrets. Who is the mysterious commander with no memory? What lies beyond the mists? Who or what are the Ux? The answers will lead the Doctor and her friends towards a deadly reckoning.
Elenco: Matt Smith , David Tennant , Arthur Darvill , Karen Gillan , Jenna Coleman , Peter Capaldi , Jodie Whittaker , Billie Piper , Mandip Gill , Bradley Walsh , Tosin Cole , Christopher Eccleston , Freema Agyeman , Catherine Tate , Pearl Mackie , Matt Lucas , John Bishop .