Disaster strikes as a specialised team of investigators struggle to find out the truth about a strange monolith which sends out an intercontinental signal.
| Actor | Role |
|---|---|
 David KeithMason Rand | Mason Rand |
 Stephanie NiznikDr. KC Czaban | Dr. KC Czaban |
 Ryan O'NealAllen Lysander | Allen Lysander |
 Brian ThompsonCaptain Tower | Captain Tower |
 Steve BondColonel Tell | Colonel Tell |
 Craig WassonHudson | Hudson |
 Michael CavanaughWilliams | Williams |
 Shannon LeePamela | Pamela |
 James AveryDr. Solomon Holt | Dr. Solomon Holt |
 James HongAmbassador Po | Ambassador Po |
 Joseph Patrick KellyControl Tech | Control Tech |
 Donald LiChinese Scientist | Chinese Scientist |
 William ZabkaRover Driver Joe | Rover Driver Joe |
 Marc McClureGerman Scientist | German Scientist |
 Eloy CasadosMexican Doctor | Mexican Doctor |