Even though he was sworn to secrecy, Digital Spy snapped up the chance to speak to Tom Ellis - aka 'sitcom Miranda's love interest Gary - and bombarded him with questions until he opened up about that will they/won't they romance, the future of the programme, a possible movie, and who he'd love to join Gary Barlow in making a guest appearance on the show (the answer will surprise you). From what he's said, Miranda series three sounds like it'll be 'such fun'...
Miranda is about to return for its third series, the fans have been desperate for it to return - do you think they'll be satisfied with what you guys have come up with?
"I hope so. Personally, I think it's the strongest series out of all three. I think the laugh count is much higher, the characters are more interesting and the story's moved forward. I think [the series] have always had an overall narrative of what Miranda wants in her life, but this one follows that same pattern while still chaos happens all around."
This'll be the first series to debut on BBC One and it's also a big part of the channel's Christmas lineup - does that add a lot of pressure?
"I hate calling it pressure because it's a privilege to be in that position, that we're asked to go out at Christmas and be part of this schedule. And having all this expectancy around it is because people enjoy the series and we enjoy doing the series. So if we didn't enjoy it, it might feel like there's pressure, but because we enjoy it so much it just feels like, 'Come and laugh along with us, please'."
You've obviously been told to keep tight-lipped, but are there any teasers you can give us about Miranda's third series?
"There's quite a lot of kissing that happens, but not necessarily between Miranda and Gary."
So a few surprise romances, maybe?
Obviously the fans want Gary and Miranda to be together, and it seems like that's where the show will end up going. Do you think them getting together would be the thing that ends the show?
"I don't know, it's so hard to say because the dynamic of their relationship is based upon the 'will they/won't they' [aspect] and if they ever get together, will it be as satisfying for the audience? If I listened to everyone that tweets me about it, yes, but I think ultimately they [just] want Miranda to be happy. The sense I get about the whole show is that people are just rooting for her."
Miranda is known for its pratfalls, will Gary be tripping over a bit more this series?
"There are a few bits of physical comedy for Gary, yeah, certain moments. You start to learn a bit more about Gary's weaknesses. I wouldn't say [he's] stealing the show, I don't think that's possible, but... we've had two series of it and I think we felt [so much] more confident this year about what we were doing that it just let our characters take on a whole new dimension as well."
You can't say anything about the celebrity cameos coming up, but who would be your dream guest star?
"I'd probably have just cast all dwarf actors to play opposite Miranda."
This third series is rumoured to be the final one - do you think that'll be the case?
"I'm not sure what's happening with it in the future. I just don't know. I've said before and I'll always say it, as long as it's going and Miranda wants me to be a part of it, I'd love to be part of it, so watch this space."
You know the ending, obviously. Does it round everything off nicely, does it feel like a final episode?
"Well, I think the audience will be left wanting more."
There's been a few rumours of a Miranda movie as well. Do you think that would ever happen?
"I couldn't possibly comment on that, to be honest. I don't find anything out until it's actually happening and things are up and running. I read the rumours too and I wondered, 'Where did they come from?' I don't see any reason why it wouldn't [work]... I'd probably get Colin Firth to do it."
When you first signed up for Miranda, did you ever think it would become as big as it is now?
"No, God no, not at all. Not doing it a disservice at all, just you get used to doing jobs that you get attached to and you think are good and you don't hear about them ever again. You kind of get used to that, so when something comes along that is a big hit and people are watching and excited about, it's really unusual.
"When we first did it as a pilot and I met Miranda, I met this amazing, hilarious, wonderful woman, but I don't think anyone had any expectations of where it would go to. I think the most we hoped for was to get a series out of it and then see what happened."
What do you think is the secret to Miranda's success?
"I think she's incredibly gifted, incredibly talented and naturally funny. She has a great sense of humour about everything. But also I think she doesn't get enough credit as a writer, given that she's written every episode of Miranda and it's not the same thing every week. There are very clever things she does in her writing and the way in which she structures a perfect farce in each episode is something I think she should get a lot of credit for."
Do you think that's because people think farce is a simplistic form of comedy?
"That's the whole thing. It's weird when you break it down in the rehearsal room and it becomes almost scientific, and then when you watch the final thing, having gone through that process, I still watch it back and laugh."
How similar are Miranda the person and Miranda the character?
"I think there's a big difference between real Miranda and 'sitcom Miranda', as we call her. They differ in lots of lots of ways. [She has] wisdom."
Is she not constantly falling down on set, for example?
"No. Which shows what a great actress she is, because she looks like she probably does that all the time."
Miranda airs Boxing Day (Wednesday, December 26) at 9pm on BBC One.