"Borderland" is the name of the 80th episode from the television series Star Trek: Enterprise. It is the fourth episode from the fourth season of the series. "Borderland" initially aired on October 29, 2004 on the American television network UPN.
"Borderland" marks the point in the series history where it had aired more episodes than the parent program, Star Trek: The Original Series, that only ran for 79 installments.
"Borderland" is also the first episode in a three episode arc that features the highly anticipated return of Brent Spiner (Data from Star Trek: The Next Generation) as the criminal mastermind Dr. Arik Soong, an ancestor of the scientist who created Data.
The title, "Borderland", is named for the volatile region of space between the Klingon Empire and the Orion Syndicate where much of the story unfolds. It featured the first on-screen appearance of male Orions, a species that was introduced in the very first Star Trek story, "The Cage".
