Susan Ivanova discovers a derelict spaceship in hyperspace. They tow it back to Babylon 5, then strange things start happening. People are being telepathically taken over by aliens from another (third)space.
Bruce Boxleitner
as Capt. John J. Sheridan
Claudia Christian
as Susan Ivanova
Mira Furlan
as Delenn
Shari Belafonte
as Elizabeth Trent
Stephen Furst
as Vir Cotto
Patricia Tallman
as Lyta Alexander
Jeff Conaway
as Zack Allen
Clyde Kusatsu
as Bill Morishi
William Sanderson
as Deuce
Josh Coxx
as Lt. David Corwin
Judson Mills
as Delta Seven
Adam Gifford
as Guard
