Dailies | ‘Doctor Who’ 50th Anniversary Special Trailer: Matt Smith, David Tennant and John Hurt Collide (Video)

BBC America releases the first look at the much-anticipated special airing in November

Time and space hurdles the Doctors at each other on BBC America's 50th Anniversary episode, “Doctor Who: The Day of the Doctor,” which will simulcast in more than 75 countries on Saturday, Nov. 23 at 2:50 p.m. ET.

Written by executive producer Steven Moffat, the episode brings together the outgoing 11th Doctor (Matt Smith), the 10th Doctor (David Tennant), current companion Clara (Jenna Coleman), former companion Rose (Billie Piper) and the mysterious echo Doctor played by John Hurt.

Also read: BBC America Unveils Epic ‘Doctor Who’ 50th Anniversary Programming Lineup (Video)

Read the BBC America's description for the special below:

The Doctors (Smith and Tennant) embark on their greatest adventure across space and time. In 2013, something terrible is awakening in London’s National Gallery; in 1562, a murderous plot is afoot in Elizabethan England; and somewhere in space an ancient battle reaches its devastating conclusion. All of reality is at stake as the Doctor’s own dangerous past comes back to haunt him. Starring Matt Smith, David Tennant, Jenna Coleman, with Billie Piper and John Hurt. Last seen as the Doctor on January 1, 2010, this will be the first time David Tennant has reprised his role as the Tenth Doctor. During his reign as the Time Lord, Tennant appeared in three seasons as well as several specials. He was first revealed as the Doctor in the 2005 season finale, The Parting of the Ways. Meanwhile Billie Piper, who played companion Rose Tyler for two seasons following the reboot in 2005, will appear in the show for the first time since featuring in David Tennant’s last episode, The End of Time in 2010.

The episode marks the first of Smith's final two episodes in the role. He announced in June that he’s leaving the series saying he felt it was time to move on. After a very secret search for his replacement, showrunner Moffat announced in August that the 12th Doctor is veteran Scottish actor Peter Capaldi (“World War Z,” “The Hour”). He’ll make his first appearance during the Christmas special when the 11th Doctor regenerates.

Also read: ‘Doctor Who's’ Matt Smith Talks His Exit – ‘People Will Forget Me’

Additionally, BBC America has a pretty epic lineup of specials and marathons planned that will lead up to the 50th Anniversary episode as well as the film, “An Adventure in Space and Time,” which explains how the “Doctor Who” series came to be in the early-60s.

Watch the new trailer above.