The Power Of The Doctordoctor Who : Season 13 E... -

: Tegan Jovanka (Janet Fielding) and Ace (Sophie Aldred) have central roles, while others like Ian Chesterton (William Russell) and Jo Jones (Katy Manning) appear in a final "companion support group".

: Disguised as Rasputin in 1916 Russia, the Master uses a captured energy being (a Qurunx) to fuel a "forced regeneration," successfully stealing the Doctor's body and identity for a time. The Power of the DoctorDoctor Who : Season 13 E...

" The Power of the Doctor " is a feature-length special that originally aired on , marking the BBC's centenary and serving as the final adventure for the Thirteenth Doctor. Plot Overview : Tegan Jovanka (Janet Fielding) and Ace (Sophie