The Janus were a race of humanoids who had faces on both the front and the back of their heads. For the female of the species, the forward facing one allowed them to see into the future, whilst the backwards facing one allowed them to see into the past. They were hunted and enslaved for this ability. One Janus named Anah took refuge in a Trap Street in London along with her daughter Anahson. The girl pretended to be a boy in order to protect herself from exploitation. A Trap Street was a hidden realm, concealed in the heart of a city, where alien refugees could live in peace. The London street was was presided over by Ashildr, the girl whom the doctor had made immortal. Anah had been murdered by a friend of Clara's - Rigsy. The Doctor did not believe this and his investigations, helped by Anahson, revealed that Anah wasn't dead at all, merely held in suspended animation. The whole situation had been created by Ashildr in cooperation with the Time Lord High Council to capture the Doctor.
Played by: Letitia Wright (Anahson), Patricia Dichler (Anah). Appearances: Face the Raven (2015).
- Wright is another of those instances where an actor appears in a relatively minor role in Doctor Who, just before they suddenly hit international stardom. For her it was an appearance in 2018's Black Panther, before reprising the role of Shuri in Avengers: Infinity War and Avengers: Endgame.