Site Menu

May 6th, 2017 56 comments

We earn a commission for products purchased through some links in this article.

What did You Think of Series 10 Episode 4 Knock knock ?

Now that the fourth episode of series 10 has been aired what did you think? Was it everything you had hoped for or not what you expected.

Bill is moving in with some friends and they’ve found the perfect house – so what if it’s strangely cheap to rent, and the landlord is a little creepy?

The wind blows, the floorboards creak, and the Doctor thinks something is very wrong. What lurks in the strange tower at the heart of the building – and why can’t they find any way to enter it?

The Doctor is played by Peter Capaldi, Bill by Pearl Mackie and Nardole by Matt Lucas. David Suchet guest stars at the Landlord.

Doctor Who Series 10 Parts 1 and 2 Blu-ray / DVD

Available to order in the UK from

Available to order in the USA from

Peter Capaldi returns as Doctor Who for twelve thrilling adventures. He is joined by new companion, Bill (played by Pearl Mackie), along with returning loveable alien, Nardole (played by Matt Lucas).



  • 12th Doctor Fan

    May 13th, 2017 - 3:52pm

    So agree this series is so much better than last, loved Heaven Sent but that’s it, this series will be watched again and again on blu ray when I get them.

  • Simon W

    May 11th, 2017 - 3:00pm

    For me that last 4 and last years xmas out of 10 are

    The Return of Doctor Mysterio 5/10
    The Pilot 8/10
    Smile 3/10
    Thin Ice 8.5/10
    Knock Knock 9.5/10

    And that’s what I think.

  • Dalek4ever

    May 11th, 2017 - 7:42am

    I think it’s okay ,

  • Whorules

    May 10th, 2017 - 10:40am

    Very jumped the shark

  • Tim M

    May 10th, 2017 - 8:12am

    Sorry…Jumped the Shark.

  • Tim M

    May 10th, 2017 - 8:11am

    ‘The Last of the Time Lords’ was a mess. RTD lost the plot during that one. Plus the Doctor floating in the air surrounded by light…Awful! Jumped the Sark.

  • Dr RevWho

    May 9th, 2017 - 7:39pm

    And, for the heck of it;

    ‘The Return of Doctor Mysterio’ – 8/10

  • Dr RevWho

    May 9th, 2017 - 7:38pm

    Strongly agree with that. These are my scores:

    ‘The Pilot’ – 6/10
    ‘Smile’ – 8/10
    ‘Thin Ice’ – 8/10
    ‘Knock Knock’ – 8/10

  • When The Doctor Was Me

    May 8th, 2017 - 10:48pm

    Anyone else watched this with the headphone surround sound. Just finished it, want to make sure it was dark! Its really cool actually because you hear a lot more than you do from just your TV. Just wondered what others think of it?

  • Tim M

    May 8th, 2017 - 9:01am

    My scores for this series so far…
    ‘The Pilot’ 7/10
    ‘Smile’ 9/10
    ‘Thin Ice’ 8/10
    ‘Knock Knock’ 8/10
    All in all a strong series so far. Pearl Mackie as Bill has been excellent , and confirms my belief that Clara was there for one series too many (She should have left in ‘Last Christmas’.) Even Capaldi seems more suited to a new companion, rather than one carried over from the previous (Matt Smith) era. Matt Lucas adds the occasional light relief as Nardole. It’s good he doesn’t feature heavily in every episode. Best series since series 5 so far in my opinion.

  • Ron

    May 8th, 2017 - 6:54am

    No way will it be missy

  • Whorules

    May 7th, 2017 - 10:05pm

    Really enjoying this series so far, only quibble with knock knock is the bringing back to life of the students, didn’t like that. Mind I hate that in all fiction so it’s more a general dislike than a go at this story. Like to see the author write another see if he can improve on it. I had the same reaction to Russell Davies last of the time Lords and the year that never was, just a kind of story telling I don’t like. Still, really looking forward to the rest of the series.

  • The Dalek Whovian

    May 7th, 2017 - 9:18pm

    Two words: David Suchet. Apart from that this episode had a very nice creepy tone.

  • Alex Who?

    May 7th, 2017 - 1:37pm

    Not a bad play on the haunted house concept. David Suchet was great as the landlord. Its a treat to have him on the show.

  • Spamella

    May 7th, 2017 - 11:43am

    I loved this espiode very much, the doctor was excellent trying to keep the students safe from harm, the caretaker played by David Suchet was excellent for he is such a very talented actor in all of his roles that he plays. I think that it is Missy playing the piano in the vault.

  • Random Critic

    May 7th, 2017 - 11:34am

    Trust David Suchet to steal the show. The contrast between him and the actors “playing” the students was like night and day.
    Putting aside the haunted house shtick, this has to be one of the better eps, at least until they ruined it at the end.

    I couldn’t ignore the following plot conveniences.
    Thunder and lightning that had nothing to do with anything, because…haunted house.
    A human landlord that appears or disappears in an unexplained fashion, because…haunted house.
    I don’t see how the restorations work. Surely the originals are dead and these are just exact copies. Even without that, it looked like a very cynical last-minute undo button to what was otherwise a good episode.

    But, I wonder, if it didn’t have David, would it still have been a good episode?

  • 47

    May 7th, 2017 - 9:44am

    A steady start to this series, o’k-to-good, episodes, and that’s fine, cos the last series was very up and down, for me personally – great one minute, terrible the next.
    This episode I thought was very good, to the point, and the story just got on with itself without clutter.
    The incidental music set a nice tone too – and the actors all supported the story as well.
    As to the vault, can’t say I am a big fan of these type of things (Pandorica – urgh), maybe The Master is in it – as the piano started playing again when The Doctor mention the house ate the kids (or however he put it) ,maybe he aint – but, happy to wait and find out.

    Of course the next question is why is there someone/something in the vault, and how did it get there… and what is the significance of it …..

    For pure idle speculation; Missy did mention the Doctor gave her a broach when her daughter was born in The Witches Familiar… Maybe Missy is the Master’s Daughter …. I dunno … Anyway, looking forward to a multiple Master story – if that is indeed the case !
    In a nutshell, not a bad start to the series, good and solid, and enjoying it. Ta !!

  • Weeping Angel

    May 7th, 2017 - 9:39am

    Heres my ranking of the first four episodes out of 10:

    The Pilot: 6.5/10
    Smile: 8.5/10
    Thin Ice: 4.5/10
    Knock Knock: 7.5/10

    I thought that The Pilot was good, but it really just focused on Bill’s character, and the story was weak. I like to find out more about the companions personality each episode, not just in one go.
    I loved Smile. I thought that the emoji robots were really cute and funny and Peters reaction to them was sooo funny.
    I really didnt like Thin Ice. It was exactly the same story as The Beast Below, if not even weaker.
    I didnt really like the ending of knock knock, but the rest of the story was really gripping!

  • DannyTheNerd

    May 7th, 2017 - 9:23am

    I agree, it is most likely missy. I think she is in episode 6, and its been said we will find out who is in the vault in episode 6, so its most likely her

  • Doctor909

    May 7th, 2017 - 8:59am

    An alright story just a shame it wasn’t more freaky and I didn’t really find the whole daughter to mother thing all that believable. However, it was by no means a horrifically bad story.
    As for who I thinks in the vault, I think it has to be Missy. Definitely not John Simm’s Master as I don’t see him playing the Piano but I could definitely see it as Missy.

  • Pats86

    May 7th, 2017 - 8:47am

    Underwhelming if anything, potential was there but yet again poor storyline let’s us down. Why is it that we continue to see the reset button pushed over and over again under Moffats show running? It has gone beyond a joke now!
    As for the volt, it could well be Susan, the granddad references could be a clue, then again it may be a smoke screen. If it is The Master/Missy that would be underwhelming and I hope it isn’t.
    This series has not got off to a great start so hopefully it will improve (Simms Master will see to that with any luck) having said that it is better than series 9, but it could be down to Clara not being in it.

  • Exterminator

    May 7th, 2017 - 8:19am

    I was hoping the landlord was going to turn out to be another time lord. Especially when the Dr was looking at him funny and asking what year it was and who was prime minister. It was as though the Dr could see he was a time traveler. They missed a big opportunity there.

  • Exterminator

    May 7th, 2017 - 8:16am

    I’m a bit disappointed, this should’ve been a really good creepy episode that gave us all nightmares but it just didn’t work for me. The end was awful, I hated the wooden girl thing, they should’ve left her out completely and just had the crazy landlord feeding people to the bugs. What happened to the bugs anyway, did they all die when the house collapse? All the students should’ve stayed dead, the house ate them!!! Special effects were cool and the house was great but let down by a silly storyline.

  • Anonymous

    May 7th, 2017 - 7:44am

    Personally, I think the weakest of the series might have been Thin Ice

  • r1ch1e

    May 7th, 2017 - 6:05am

    Thinking about it now, whoever is in the vault must be bound in some way. I mean they must have their arms free to tinkle those ivories but that’s about it because if they were free then the would then the doctors outlet be stupid enough to open the doors wide enough to put a piano in there.

    All they would need to come club him over the head, Nyder style, and escape!

  • Mr. J

    May 7th, 2017 - 2:37am

    I think Knock Knock will be the only not great below par episode of series 10. Probably will be my least favourite if this year but still much better than the worst eps of series 9, (Before the Flood & sleep no more). If this is the worst of this series, fantastic because there was plenty of this episode that I liked, just the ending was a bit of a letdown!

Leave a Reply

Your email address will not be published.

By clicking submit you agree to our terms and conditions (below), we reserve the right to edit or delete inappropriate messages.

Comment rules

The Doctor Who site welcomes constuctive comments related to the news article in question. Links posted in comments may not be displayed. We reserve the right to delete or edit any post entirely at our discretion. If you leave unacceptable comments your IP address will be banned and reported

Click here to read full comments terms and conditions