Doctor Who is back for its long-awaited eleventh season (since its modern reboot, that is), heralding the arrival of a new Doctor, a new showrunner, and an even bigger first: a female star.

The BBC is notoriously secretive about its flagship sci-fi series, and series 11 is no exception. Still, we've gleaned together everything we can, and here's what we know so far about the upcoming series of Doctor Who.

When is Doctor Who on next?

Doctor Who is back on our screens now, and the next episode - the season finale -  titled 'The Battle of Ranskoor Av Kolos', will air in the UK this weekend on 9 December at 6:25pm. That's a little earlier than the season's initial episodes, partly to make room in the schedule for the finale of David Attenborough's Dynasties.

You can still catch up on older episodes. That's helped by the BBC's decision to add every single episode of the show since 2005 - including all the specials - to the iPlayer streaming service, announcing that they'll stay online until at least the season 11 finale. That means you get every episode from every Doctor from Christopher Eccleston to Peter Capaldi, without paying a penny.

How can you watch Doctor Who in the US?

Obviously Doctor Who is a British show, but in recent years BBC America has been better about airing the show as close as it can to the British air date, to minimise piracy. That's the same this year - BBC America is airing each episode in a regular Sunday evening slot at 8/7c.

That means there'll be a few-hour delay. If that's still too much of a gap, and you want to watch episodes as they air live in the UK, you can use a VPN to stream episodes on iPlayer as if you were in the UK. Bear in mind that this is a breach of the iPlayer terms of use, since you won't be paying the licence fee, but it will let you watch new episodes the moment us Brits get to.

That's also what you'll have to do if you want to take advantage of the BBC's to decision to add every episode of the show's modern era so far to iPlayer - so grab a VPN if you know you've missed a few and want to catch up. Alternatively, you can stream every episode of the modern show so far on Amazon Prime Video.

When is the Christmas special?

The BBC stayed quiet about the Christmas special all year (even though it's been a Doctor Who tradition since its relaunch), waiting until November to confirm that one is coming. Except it won't air on Christmas Day.

It won't air on Christmas Eve either, or even Boxing Day. Nope, this year the Christmas special is actually a New Year's special, and it'll air at some point on New Year's Day instead - the first time the show has done so since 2010, when David Tennant's departure was split across two episodes, one on Christmas Day and one on New Year's.

We also know a little more about what to expect from the New Year's special. The so-far untitled episode has been written by showrunner Chris Chibnall and directed by Wayne Yip, and we now have a synopsis and a first image from the episode:

"As the New Year begins, a terrifying evil is stirring, from across the centuries of Earth’s history. As the Doctor, Ryan, Graham and Yaz return home, will they be able to overcome the threat to planet Earth?"

The special will feature guest appearances from Call the Midwife’s Charlotte Richie, Indian Summer’s Nikesh Patel and Save Me’s Daniel Adegboyega, and rumour has it that the iconic Daleks could be making a surprise appearance - though we'll have to wait to find out for sure.

The episode will air at some point on New Year's Day on BBC1, though we don't yet know exactly when - or what the plans are for the US and elsewhere. We also don't have a trailer yet, but we won't have long to wait - presumably we'll get a trailer with the season 11 finale, set to air on 9 December.

Check out our guide to the rest of this year's best Christmas TV for more - including some specials that are actually airing for Christmas.

Who are the Doctor and companions?

Unless you've been living under a rock for the past year, you've probably already heard the biggest news about the new season (or, uh, already read it in our intro): this year, for the first time ever, the Doctor will be played by a woman.

Jodie Whittaker is the woman taking on the honour. If you're not familiar with the name, you might know her from detective drama Broadchurch or her role in one early Black Mirror episode, although she's had plenty of other British TV and film roles over the years. You can get a good look at her in costume from a few different angles in these officially releases stills from the upcoming series:

Doctor Who season 11 stills

She isn't be the only new face in the Tardis though, as she's be joined by not one, not two, but three new companions: Bradley Walsh, Tosin Cole, and Mandip Gill.

One thing we know is that the dynamic in the Tardis won't be romantic this time around. "We are a friendship group in this season," Whittaker told The Times. She also directly said "no" when asked if there would be a romance between the Doctor and a companion, though added: "But we all love each other."

You can watch the Doctor's first meeting with Ryan and Yasmin in a clip from the premiere below. This clip was actually leaked online months before the show aired, but it took the BBC a while to decide to make it available officially:

There's change behind the camera too though, with a new showrunner in charge. Steven Moffat stepped down together with the departure of Peter Capaldi, after running the show since 2009, and has been replaced by Chris Chibnall.

If you don't recognise his name immediately, you might know it from Broadchurch - he's the guy in charge of that hit ITV show, so it all makes sense. He's not totally new to Doctor Who either, as he previously wrote five episodes of the show between 2007 and 2015, starting with 42.

There's one final big change: longtime composer Murray Gold has also departed the show, having worked on Doctor Who ever since its 2005 reboot. He'll be replaced by up-and-coming talent Segun Akinola, a member of BAFTA's 2017 'Breakthrough Brit' program, whose work has so far mostly soundtracked short films and documentaries. He'll be composing all of the new season's incidental music, along with the new take on the iconic theme tune.

Watch the trailers

The BBC has released a few different clips to promote season 11 of the show, but we'll get straight to the main thing you want to watch: the first official trailer for the series, unveiled at San Diego Comic-Con, which you might have already watched at the top of the page:

Then there's the second full trailer for the show, released just two short weeks before the season premiere, which gives us an even better look at a few of the settings the show plans to explore:

That was the first actual official footage from season 11, but before that the BBC gave us a few other teasers and clips to enjoy. The first is the tease that revealed Jodie Whittaker to the world as the Doctor, first aired immediately after the Wimbledon men's final in 2017:

If that's not enough for you, the BBC uploaded the last few minutes of Peter Capaldi's final episode, last year's Christmas special, which includes his regeneration and Whittaker's first few minutes in the role:

We also have the first official teaser for season 11, aired during the World Cup final, but it doesn't feature any actual footage from the show itself, only footage filmed for the brief teaser:

Plot and story rumours

The new season is following Doctor Who tradition and exploring a different story each week - to the extreme that this year there will be no two-parters, only ten fully standalone episodes. Even more than that, none of those stories feature returning monsters, Variety has confirmed. So no Daleks, no Cybermen, no Ood, no nothing. It's all new.

We've already seen the first episode, and we now know a bit about episode two, which is titled 'The Ghost Monument' and features appearances from Shaun Dooley, Art Malik, and Susan Lynch:

"Still reeling from their first encounter, can the Doctor and her new friends stay alive long enough, in a hostile alien environment , to solve the mystery of Desolation? And just who are Angstrom and Epzo?"

Both the first two episodes are written by Chibnall, with writers for other episodes including author Malorie Blackman, Ed Hime (Skins), Vinay Patel (Murdered By My Father), Pete McTighe (Wentworth) and Joy Wilkinson (The Life and Adventures of Nick Nickleby) 

We do know a little about one of the plots to come: acclaimed actor Alan Cumming admitted that he'll be playing Scottish monarch King James I in one episode, adding that he'll be a "baddie", which is pretty much par for the course for royalty in the show.

The secrecy so far is very much on purpose, as Chibnall explained at the show's Comic-Con panel:

"I think there's a lot of new things this year. There's new worlds, there's new characters, there's lots of new guest characters. New dialogue, new camera angles," he said. "It's really so that we can get it to you guys and everyone else in the world at the same time all polished. … I really love television when it's a communal experience … I want you guys to all be talking about it at the same time, and we have things you're not going to want to be spoiled for."