A thrilling and emotional festive special featuring major guest stars, and the doctor’s most iconic and deadly adversaries'. '.strtoupper('s')tarring jodie whittaker and john barrowman'. '.strtoupper('t')he doctor is locked away in a high security alien prison'. '.strtoupper('i')solated, alone, with no hope of escape'. '.strtoupper('f')ar away, on earth, her best friends, yaz, ryan and graham are far away on earth and having to carry on with their lives without her'. '.strtoupper('h')owever they soon discover a disturbing plan forming'. '.strtoupper('a') plan which involves a dalek'. '.strtoupper('h')ow can you fight a dalek without the doctor'? '.strtoupper('e')ven with captain jack’s help, the gang are set to face one oftheir biggest and most frightening challenges yet…