- Thirdspace has other uses. Please see Thirdspace (disambiguation) for other meanings.
- Bruce Boxleitner as Captain John Sheridan
- Claudia Christian as Commander Susan Ivanova
- Mira Furlan as Ambassador Delenn
- Richard Biggs as Dr. Stephen Franklin
- Jeff Conaway as Security Chief Zack Allan
- Stephen Furst as Vir Cotto
- Patricia Tallman as Lyta Alexander
- Clyde Kusatsu as Bill Morishi
- Shari Belafonte as Elizabeth Trent
- William Sanderson as Deuce
- Kip King as Leo
- Floyd Levine as Alex
- Jeffrey Anderson-Gunter as Merchant
- Joshua Cox as Lt. Corwin
- Judson Mills as Delta 7
- G. Adam Gifford as Guard
- Jerry Kernion as Builder
- Valerie Red-Horse as Technician
- Don Swayze as Raider Leader (uncredited)
The movie deals with an enormous artifact that is discovered in Hyperspace and towed to the Babylon 5 station for investigation, at which point the xenoarchaeological organization Interplanetary Expeditions sends a representative, Dr. Elizabeth Trent, to take control of the examination. Upon her arrival at Babylon 5, Doctor Trent meets with Captain John Sheridan who, in exchange, for allowing her team access to the artifact, request a large shipment of food and supplies in defiance of President Morgan Clark's quarantine of the station, as the station is experiencing food and supply shortage. Dr. Trent agrees to this request.
After being placed near the station, the artifact begins to influence the dreams of many inhabitants of Babylon 5, and eventually controls many of them during their waking hours as well. These thralls, led by Deuce, first demand that the excavation be accelerated and then become increasingly violent towards the rest of the Babylon 5 population.
Eventually it is revealed by Lyta Alexander that the artifact is a Jumpgate built by the Vorlons a million years ago with a purpose that cannot be expressed in human language except as an attempt to make contact with the gods. In reality, Thirdspace is inhabited by a violent race that posed a threat even to the Vorlons, and the ensuing battle ended with a group of Vorlons controlled by the Thirdspace entities capturing the artifact and jettisoning it into hyperspace.
When the device is finally activated, the Thirdspace aliens stream out and begin an assault on Babylon 5; the violent behavior of the individuals under the artifact's control is intended to disrupt the station's attempt to defend itself. The struggle is ended when John Sheridan enters the artifact and detonates a nuclear bomb.
In Across Time and Space: The Chronologies of Babylon 5, Terry Jones' historical database places the story within the events of "Moments of Transition" as this episode spans four months (May 2261 to September 2261).
"It was the middle of the Earth year 2261. The year between wars and the beginning of a new age. The Shadow War was over, but there was still a darkness waiting for us at home. President Santiago had been assassinated, and his successor, President Clark, was turning Earth into a prison camp. We'd broken away from Earth, and in retaliation, they quarantined us, trying to strangle our supply lines. We were desperate and we couldn't afford to lose even a single supply ship. In the midst of all of this, we made contact with Thirdspace, and we almost didn't survive it. I only hope we never come across it again . . . because next time, no one's going to survive it."
- – Captain John Sheridan
This TV Movie was released with four others and some limited special features on Region 1 DVD. For more information see:
This TV Movie was released with five others and some limited special features on Region 2 DVD. For more information see:
This TV Movie was released with two others and some limited special features on Region 2 DVD. For more information see:
The Novelization of Babylon 5: Thirdspace was published in 1998 and written by Peter David.
|Babylon 5 franchise|
|Babylon 5 & Crusade Episodes by Season|
|Signs and Portents • The Coming of Shadows • Point of No Return • No Surrender, No Retreat • Wheel of Fire • Crusade: Season 1 • Unfilmed Episodes|
|The Gathering • In the Beginning • Thirdspace • River of Souls • A Call to Arms • The Legend of the Rangers • Voices in the Dark|
|Novels • Comic Books • Short Stories • Reference books • Magazines|
|DVD Releases • VHS Home Video • The Official Guide to Babylon 5 • Babylon 5: Into the Fire|