Produced by Brannon Braga (best known for his work on the Star Trek franchise), David S. Goyer (best known for films such as Blade and Batman Begins) and David Heyman (best known for the Harry Potter film franchise), the series focuses on a secret government project investigating the first contact with an extraterrestrial species. This series was often referred to as a reverse X-Files, with the main characters of the series seeking to cover up the truth about first-contact instead of uncovering the conspiracy.

The series was first shown on Friday nights, but was moved to Tuesday in an effort to boost ratings. This plan backfired, with the show registering a sharp drop in its ratings on its first Tuesday night showing on November 22, 2005, and CBS cancelled the series on November 23, 2005.[1], with four episodes left unbroadcast.

The remaining episodes were aired on Sky One, a channel in the United Kingdom owned by BSkyB, who co-produced the series with CBS. Threshold (the entire series) was released on DVD on August 22, 2006.

The series began airing on The Sci Fi Channel on Friday, October 13, 2006 at 10:00 pm, following a new episode of Battlestar Galactica.

• CBS Threshold official site

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