In the wake of the tragic events at Waco, Texas where an armed conflict with armed militiamen broke out, agents of the federal government's Alcohol, Tobacco, and Firearms (ATF) carry out a clandestine mission within another militia operation that is possibly involved in the sales of guns and the murder of an agent. Agent Robin O'Brien infiltrates the operation against her director's orders. When events start unraveling and an FBI agent threatens to take over the operation and start a military action, the ATF agents have to apply what they learned from Waco to save another blood bath.
| Actor | Role |
|---|---|
 Amy BrennemanAgent Robin O'Brien | Agent Robin O'Brien |
 Kathy BakerATF Director Maggie Hale | ATF Director Maggie Hale |
 Vincent AngellAgent Reeve Aquilar | Agent Reeve Aquilar |
 Keith DavidFBI Director Richard Long | FBI Director Richard Long |
 Mark Boone JuniorJake Neill | Jake Neill |
 Michael O'NeillATF Asst. Director Ben Walker | ATF Asst. Director Ben Walker |
 Sean BridgersSmitty | Smitty |
 Jay O. SandersSam Sinclair | Sam Sinclair |
 Sarah TriggerCarol | Carol |
 William RichertPatrick McKennan | Patrick McKennan |
 John PhilbinRandy | Randy |
 Raphael SbargeDirector Hale's Assistant | Director Hale's Assistant |
 John BeasleySecretary Robert Edwards | Secretary Robert Edwards |
 Coby BellAgent Dinko Bates | Agent Dinko Bates |
 Brandon SmithNot listed | Not listed |
| JJustin WilliamsMatt O'Brien | Matt O'Brien |
 Phyllis ApplegateRachel Allen | Rachel Allen |
| HHarry HutchinsonAgent-in-Charge | Agent-in-Charge |
 Rob NagleBilly Jones | Billy Jones |
 Joe SpanoSenator at Hearing (uncredited) | Senator at Hearing (uncredited) |