Last month at Comic-Con, BBC debuted the first trailer for Season 9 of Doctor Who, while announcing that the show will return September 19. If you've been chomping at the bit for new footage since then, you're in luck, as the network has revealed the second Doctor Who trailer today, which offers a few new glimpses at guest star Maisie Williams (Game of Thrones). We still don't know exactly who the actress is playing yet, but here's what lead writer and executive producer Steven Moffat had to say about the actress' role in a statement from March.

"We're thrilled to have Maisie Williams joining us on Doctor Who. It's not possible to say too much about who or what she's playing, but she is going to challenge the Doctor in very unexpected ways. This time he might just be out of his depth, and we know Maisie is going to give him exactly the right sort of hell."

Exploding with epic and thrilling adventures, Doctor Who returns to BBC America on Saturday, September 19 in the new season of the hit show. The Doctor (Peter Capaldi) is joined by Clara Oswald (Jenna Coleman) for time travel on a cinematic scale. Having the time of their lives, the pair meet new and old monsters, and go on a journey that takes them to deadly alien planets, creepy underwater bases, Vikings villages, a global Zygon uprising, and leads them through hidden alien dens, to the very end of time itself. The new trailer also gives us a glimpse at the returning Missy (Michelle Gomez), who returns to plague the Doctor and Clara in the season opener, and UNIT are back with Jemma Redgrave and Ingrid Oliver (Osgood) returning to Season 9 following their popular entrance in Season 8.

Also confirmed as guest cast in the new series are Rebecca Front, Rufus Hound, Paul Kaye, Joivan Wade and Sophie Stone. The show's ninth season has been written by lead writer Steven Moffat, Toby Whithouse, Jamie Mathieson, Peter Harness, Mark Gatiss and new writers to Doctor Who, Sarah Dollard and Catherine Tregenna. This season will be directed by Hettie Macdonald, Daniel O'Hara, Edward Bazalgette, Daniel Nettheim, Justin Molotnikov, Rachel Talalay, and produced by Tracie Simpson, Derek Ritchie, Nikki Wilson and Peter Bennett.

The star-studded cast continue to shoot in Roath Lock studios, Cardiff Bay, Wales, having filmed in Tenerife, and South Wales locations, Caerwent, Caerphilly Castle, Cardiff Castle, St Athans and Margam Park. Doctor Who Season 8 was BBC America's highest rated season ever on the channel and season eight is available now on BBC America On Demand and all digital platforms, as well as on Blu-Ray/DVD. Doctor Who is a BBC Cymru Wales production for BBC One, co-produced with BBC America. Check out the latest trailer, and stay tuned for more on the Time Lord's adventures this upcoming season. We also have the brand new poster.

Related: Doctor Who Showrunner Steven Moffat Leaving After Season 10

<strong><em>Doctor Who</em></strong> Season 9 Trailer

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