Threshold was a science fiction drama television series that first aired on CBS in September 2005. Produced by Brannon Braga, David S. Goyer and David Heyman, the series focuses on a secret government project investigating the first contact with an extraterrestrial species.
We have selected and highlighted for you the top 4 shows like Threshold with regards to the themes it covers. You can always find other similar series in the next section!
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