The leader of HTS has vowed to pursue officials responsible for torture and war crimes during Assad’s violent regime.
Sednaya prison – just outside Damascus – has become a byword for the brutality meted out by his enforcers.
When the Syrian goverment collapsed, families of those detained rushed there in the hope of being reunited with loved ones. But as rescue workers end their search, many families remain in limbo.
And a warning: this report contains distressing scenes.
This is a dubbed version of the report.