In the somewhat far fetched and morally dubious thriller Unthinkable, a terrorist suspect who claims to have planted three nuclear bombs is tortured to force him to reveal the locations.
Most of the movie involves debates between Humphries (played by Samuel L Jackson) and others about how far they are prepared to go to force the terrorist to reveal where the bombs are. Humphries is prepared to do the unthinkable, others are not.
During the movie the history of the terrorist is revealed and his original threat is known to be credible because the intelligence services know how much plutonium he was able to steal.
Close to the end of the movie the terrorist appears to crack and reveals the location of three bombs. But Humphries wants to continue the interrogation by unthinkable means. He points out that the three bombs don't add up to all the stolen material so there must be a forth. Nobody else takes him seriously. Why not?