In the penultimate episode of The World and On Spec’s investigative series, “Lethal Dissent,” reporter Fariba Nawa is threatened by Ihsan Sağlam, the boss of a Turkish family who worked on kidnapping jobs for Iranian intelligence. Now that Nawa is forced into the story, she steers her reporting towards questions of impunity. The investigation into Iran’s hunt for dissidents goes inside a Turkish parliamentary hearing, to find out if someone will intervene.