In October 1981, an armored Brinks truck is robbed in Nyack, New York, leaving one guard dead and another critically wounded. This episode of The FBI Files follows agents as the case moves fast from a simple robbery into something larger: forensic evidence and witness accounts point toward the Black Liberation Army and the Weather Underground, radical groups with a documented history of violence, rather than ordinary thieves. Reenactments recreate the roadblock shootout and the manhunt that follows, while interviews with FBI investigators and forensic scientists walk through how ballistics, fingerprints, and intelligence work eventually tie the robbery to Mutulu Shakur and his associates. The episode traces how a routine cash heist becomes a domestic terrorism investigation, showing the lab work and legwork behind connecting a getaway car to a decade-old underground network. Like the rest of the series, it relies on dramatized reconstruction alongside real case footage and expert commentary to lay out how the Bureau built its case, ending with the arrests that closed one of the era's most violent robbery investigations.