Revisited: Searching for the shadow man (Part 1)

Today in Focus - A podcast by The Guardian

Leaked footage documenting the 2013 execution of dozens of Syrian civilians led two genocide researchers on a painstaking search over three years to find the man responsible. The first of a two-part special. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>