Unless you’ve been stuck in the Medusa Cascade for the past several months, you’ll all know that this Friday (Christmas Day) will mark the return of the Master in part one of The End of Time!

And as we gear up for his long-awaited comeback, one that promises to be well worth the wait, we bring you a guide detailing all of the key facts relating to the renegade Time Lord!

To check out the bio, click here to be taken to our Advent index, and then simply tap-tap-tap-tap the thumbnail for Day 23. Enjoy, and don’t forget to join us tomorrow (Thursday) evening for our penultimate festive gift!