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.
| Editing | Randy Carter | Editor |
| Production | Alison Semenza | Producer |
| Writing | Sean McGinly | Writer |
| Art | Beth Wooke | Art Direction |
| Directing | Fred Olen Ray | Director |
| Production | Jeff Gerrard | Casting |
| Sound | Neal Acree | Music |
| Production | Alan B. Bursteen | Executive Producer |
| 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 | Luke Darnell | Stunts |
| Crew | Justin Lundin | Stunts |
| Crew | Bob Bragg | Stunt Coordinator |
| Crew | Dana Reed | Stunts |
| Crew | Gary McLarty | Stunts |
| Crew | Ric Drasin | Stunts |
| Crew | Matthew R. Anderson | Stunts |
| Crew | Steve Hart | Stunts |
| Crew | Armando Guerrero | Stunts |
| Crew | Keii Johnston | Stunts |
| Crew | Patrick Lahaie | Stunts |
