The telefilm centers on a present-day nuclear plant disaster and its aftermath.
| Actor | Role |
|---|---|
 Bruce GreenwoodAgent Tom Shea | Agent Tom Shea |
 Leslie HopeZoe Cox | Zoe Cox |
 Adrian HolmesAgent Charlie Jansen | Agent Charlie Jansen |
 Arnold VoslooKhalid / Sands | Khalid / Sands |
 James RemarColonel Boggs | Colonel Boggs |
| SSusan MersonAttorney General Zutrow | Attorney General Zutrow |
 Bill MondyFBI Agent Tucci | FBI Agent Tucci |
 Will LymanHomeland Chief Utley | Homeland Chief Utley |
 Brent StaitFBI Commander Hall | FBI Commander Hall |
 Don S. DavisNRC Carl Mansfield | NRC Carl Mansfield |
 Manoj SoodSyed Kahn | Syed Kahn |