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Watch Dateline: The Smoking Gun online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

Hosted by "Dateline's" Andrea Canning, "" is a hunt for clues as detectives relentlessly pursue the critical piece of evidence that ultimately cracks the case. Each investigation is packed with twists — false leads, wrong suspects, dead ends — until police finally uncover the smoking gun and arrive at justice. Stories investigated this season include a disappearance involving a young film director, two prosecutors killed in a small Texas town and a serial killer who must be stopped before the next victim is murdered.