Season 20 gave us a trilogy of stories focused on the Black Guardian’s return and his mission to kill the Doctor. One thing that makes the Guardians interesting is that, despite being incredibly ...

In the final episode, the Black Guardian makes an appearance and pretends to be the White Guardian in an attempt to dupe the Doctor into handing over the completed Key to Time. However ...

At the opening of the story the Doctor receives a warning in the TARDIS to ‘Beware the Black Guardian’. It’s never explains who sends this warning but it would seem likely that it comes from ...