This is an article about the 10th Series of the Revived series of Doctor Who, Starring a newly regenerated 13th Doctor. the series revolved around the Doctor's Mysterious doppelganger, the Tyrant, who exists in the parallel universe introduced in 8, but hints are dropped in the first half of the series.The series also revolves around the return of the Valeyard, not seen since the classic series. the series was the first to feature scientist Mia Lawson as a new companion Episode 6 also introduces Damien Smith, a passenger about the Starship Archimedes, who joins the TARDIS crew after the episode