BBC America has posted a trailer for tonight's U.S. premiere of Doctor Who: The Next Doctor, which you can view after the jump. It airs at 9 p.m. ET/PT.
Here's the official description:
It's Christmas Eve in 1851, and Cybermen stalk the snow of Victorian London. When the Doctor (David Tennant) arrives to investigate a spate of mysterious deaths, he's surprised to meet another Doctor (David Morrissey), with his own sonic screw driver. How could this be possible? Could this Doctor be a future regeneration? But if so where are his memories? The two must combine forces to defeat the ruthless Miss Hartigan (Dervla Kirwan), who is the Cybermen's human ally. But are two Doctors enough to stop the rise of the CyberKing?