Doctor Who returns this weekend for the second chapter in the Flux series, War of the Sontarans
The episode sees the return of the Sontarans, first seen in the 1974 story The Time Warrior. The warriors, created by Robert Holmes, have returned many times to battle The Doctor, most recently in the 2008 story The Sontaran Stratagem / The Poison Sky.
In the episode, the Doctor teams up with Mary Seacole, played by Sara Powell. Seacole was a British-Jamaican, healer, and businesswoman who set up the so-called British Hotel behind the lines during the Crimean War.
The episode can be seen in the UK on BBC One at 6.15 pm on Sunday. Full global broadcasts are listed at This Week in Doctor Who