Doctor Who had its finale at the weekend and as well as it being a fitting end to one of the best seasons Whovians have seen in a long time, it was full of surprises (if you haven't seen it yet, spoilers to come). It wasn't Peter Capaldi's finale appearance as the Doctor (that will be the Christmas special now), new companion Bill Potts appeared to make her exit, and... oh yeah, right at the very end the very first Doctor made a cameo!
The Doctor was originally played by William Hartnell when the show first aired in 1963, and it wasn't until after he became unable to continue that the regeneration storyline came into play. In the season 10 finale, David Bradley (who you might know as Filch from the Harry Potter franchise) played the original Doctor, but there's no question who he's suppose to be. Bradley actually played William Hartnell in the BBC drama An Adventure in Space and Time which told the story of how Doctor Who was made, and he bears a striking resemblance to the actor.
Now it seems he's returned to play the original Doctor once again and fans are quite rightly freaking out. What does this mean for the Doctor now he's come full circle? We'll have to wait for the Christmas special to find out, but below are some of the best reactions to the shocking finale...
There's a lot of love for Bill
Tears are hope. Bye Bill, you were brave, funny and one of the best companions by The Doctor side. #DoctorWho pic.twitter.com/P0lzN2M3SBJuly 2, 2017
BILL FINALLY GOT HER HAPPY ENDING 🌈 #DoctorWho pic.twitter.com/UJlD7wUQJXJuly 1, 2017
Bill and Heather travelling the stars together 😭 If there ever was a spin off, I would watch it 😊 #DoctorWho pic.twitter.com/KlgSitwdtMJuly 1, 2017
Not to mention The Master and Missy...
THE MASTER AND MISSY FLIRTING WITH THEMSELF 😂😂 #DoctorWhoJuly 1, 2017
#DoctorWho I love that the master is so narcissistic he's attracted to himself there should have at least been a kissJuly 2, 2017
John Simm putting make up on is the best thing to have happened in 2017 so far. #DoctorWhoJuly 1, 2017
I am exceptionally glad John Simm is back, and him and Michelle Gomez together are bloody wonderful. #DoctorWhoJuly 1, 2017
Master:Is it wrong that I...Mistress:Yes very #DoctorWho pic.twitter.com/AyLuDIauA2July 2, 2017
Ok it's officialI ship Missy and the Master #DoctorWhoJuly 1, 2017
Without Hope. Without Witness. Without Reward. Missy was the best Master. Kudos @MichelleGomez You were absolutely brilliant. #DoctorWhoJuly 2, 2017
But Peter Capaldi's Doctor is still a fan favourite
Capaldi is the best actor ever to play the Doctor. Fact. #DoctorWhoJuly 1, 2017
They used to say that 'your' Doctor was the one you grew up watching. Mine is now Peter Capaldi. Truly fantastic #DoctorWho #ThankYouPeterJuly 1, 2017
Sobbing at Capaldi's big speech 😭 #doctorwhoJuly 1, 2017
I'm just going to say, Peter Capaldi, you are the Doctor, and I really love you as #DoctorWho pic.twitter.com/6p44Zdm1IZJuly 1, 2017
Wow what a finale - all the actors brilliant, Peter Capaldi - what a performance! 😍#DoctorWho @bbcdoctorwhoJuly 1, 2017
@DoctorWho_BBCA this moment hit me so hard. pic.twitter.com/sBujc5vKSTJuly 2, 2017
And as if that wasn't enough, the original Doctor showed up...
LISTEN I CAN'T HELP IT I AM OVERWHELMED #DoctorWho pic.twitter.com/7k3v3HxAK9July 2, 2017
When Twelve meets One. Full Circle. Christmas Day can't get here soon enough. See you then...Doctors. #DoctorWhoJuly 2, 2017
Everyone in the Doctor Who fan base after tonight's finale. pic.twitter.com/JquLtDeFWJJuly 2, 2017
You vs The Doctor she told you not to worry about #DoctorWho pic.twitter.com/n9FUvnFwurJuly 1, 2017
OH IT'S THE FIRST DOCTOR OMG HELP ME IN GONNA CRY #DoctorWhoJuly 1, 2017