They are crimes a regime wants to keep secret: tens of thousands of Syrians have "disappeared" in the past six years of civil war, swept away to government prisons and detention centres to be interrogated, tortured and worse. The Fifth Estate tells their stories - and looks at the people who risk their lives to expose the truth about these and other human rights abuses. Warning: this program may contain mature subject matter. Viewer discretion is advised.

From the Curio.ca streaming audio-visual collection.