Moffat told CultBox: “We’ll sort [the Clara mystery] out in that [episode]. The next time you see Clara [after the finale] you’ll know it all. It’s again one that he gets quite emotional about. It’s got quite a dark tone to it.”

‘The Name of the Doctor’ airs on Saturday 18 May on BBC One.

> Catch up on all the 50th Anniversary Special news and rumours so far in our summary.

What are your theories on Clara? Let us know below…

> Order Series 7 Part 2 on DVD on Amazon.

> Buy Series 7 Part 1 on DVD on Amazon.

Watch the Series 7 Part 2 trailer…