Former CIA officer Robert Baer travels through Lebanon, Iraq, and the West Bank tracing suicide bombing from its modern origins to its spread as a weapon of choice. The film revisits the 1983 Beirut barracks bombing that killed 241 American servicemen, treated here as the attack that proved the tactic's effectiveness and inspired its imitators. Baer sits down with imprisoned would-be bombers, the families of those who died carrying out attacks, and Islamic scholars who argue over whether the practice has any grounding in religious text at all. Interrogators and intelligence analysts lay out how organizations recruit, indoctrinate, and dispatch bombers, from Hezbollah's early cells to the networks that later carried the tactic into Iraq. The film keeps returning to a single practical question: what turns a recruit into someone willing to detonate himself in a crowd, and what, short of killing him first, stops that process. Baer's own field experience gives the interviews an edge that a purely academic account would lack.