USA
20th century history as we know it is a lie. Aliens have been among us since the 1940's, but a government cover-up has prevented the public from knowing this. As the series progresses, we follow John Loengard and Kim Sayers as they attempt to thwart numerous plans of the alien Hive, most of which are tied to historical events and figures. In addition, the pair must stay one step ahead of a covert government agency, Majestic-12, tasked with fighting the aliens while maintaining the conspiracy of silence. - IMDb
| Cielo negro (cable TV title) |  Spain |
| Dark Skies - l'impossible vérité |  France |
| Dark Skies - Oscure presenze |  Italy |
| Dark Skies - Tödliche Bedrohung |  Germany |
| Mračna Nebesa (Croatian title) |  Bosnia and Herzegovina |
| Mračna Nebesa |  Croatia |
| Mračna nebesa |  Serbia |
| Mroczne niebo |  Poland |
| Temné nebe |  Czech Republic |
| Temné nebo |  Slovakia |
| Темные небеса |  Russia |
| ダークスカイ (Japanese title) |  Japan |
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Seth Mumy [7] | Youngest Boehm Son (TV Episode: Inhuman Nature) (1996) |
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Jamie Renée Smith [10] | Monica Gresham (TV Episode: Shades of Gray) (1997) |
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Anthony Medwetz [13] | Young Loengard (TV Episode: The Enemy Within) (1997) |