Jeffers works security at a nuclear power plant. The plant is being decommissioned, and a politician is touring the plant and videotaping his comments regarding the closing. A terrorist group led by Samson gets inside the gates, with their ultimate goal the detonation of a nuclear bomb inside the plant. After local policemen and the other plant workers are killed, Jeffers and Janine alone must confront and halt Samson and his terrorist squad. Written by Ken Miller
Unfortunately the movie Critical Mass is not yet available on HBO Max.
| Directing | Fred Olen Ray | Director |
| Writing | Sean McGinly | Writer |
| Production | Alan B. Bursteen | Executive Producer |
| Production | Alison Semenza | Producer |
| Sound | Neal Acree | Music |
| Editing | Randy Carter | Editor |
| Production | Jeff Gerrard | Casting |
| Art | Beth Wooke | Art Direction |
| Production | Jim Wynorski | Producer |
| Camera | Theo Angell | Director of Photography |
| Crew | Patricia M. Peters | Stunts |
| Crew | Cole S. McKay | Stunts |
| Camera | Gary Graver | Second Unit Director of Photography |
| Crew | Gary McLarty | Stunts |
| Crew | Luke Darnell | Stunts |
| Crew | Bob Bragg | Stunt Coordinator |
| Crew | Ric Drasin | Stunts |
| Crew | Dana Reed | Stunts |
| Crew | Justin Lundin | Stunts |
| Crew | Keii Johnston | Stunts |
| Crew | Steve Hart | Stunts |
| Crew | Armando Guerrero | Stunts |
| Crew | Matthew R. Anderson | Stunts |
| Crew | Patrick Lahaie | Stunts |
