A new poster for Doctor Who's 50th anniversary episode, "The Day of the Doctor," features three regenerations of the Time Lord: Matt Smith, David Tennant and John Hurt.
Hurt's mysterious character will reportedly play a dark, past version of the Doctor in the episode that debuts Nov. 23 on BBC America. The network said this week the episode will run 75 minutes. Smith is the soon-to-be outgoing Doctor, while Tennant is No. 11.
See also: 12 Reasons Why the 12th Doctor Could Be the Best Ever
The teaser comes one month after 55-year-old Peter Capaldi was chosen to play the long-standing series' 12th Doctor.
"'The Day of the Doctor' is nearly here," Smith said in a statement. "Hope you all enjoy. There’s lots more coming your way, as the countdown to the 50th begins now."
BONUS: A Terrifying Upgrade: Doctor Who's Cybermen Get a New Look
Author Neil Gaiman re-launches one of Doctor Who's most persistent villains, the Cybermen, in the episode "Nightmare in Silver." Often a metaphor for the dark side of technology, the Cybermen transform into a more formidable threat, Gaiman says.
Here's how the Cybermen have looked since 2006.
Image: Adrian Rogers, BBC