Turn Left (an episode which is part of the real world series four) does exist in the Doctor's universe, but there's yet to be any confirmation in any valid source that Turn Left is part of the in-universe fourth series of Doctor Who.
The Confounding Case of the Planetary Prankster • The Pernicious Plots of the Big Game Hunter • The Dangerous Dilemma of the Dream Doorway • Assassin on the Railroads • The Curious Case of the Weirdling Woods
Some categorisation may be based upon conjecture. Real world information should not enter into this. Additionally, a character's role in the DWU can differ from the real world - their placement here is for categorisation.
