Josh and Sara hunt the men who know what really happened to Austin. When the Assad regime fell, they went into hiding.
As the team close in, competing accounts begin to emerge: stories of detention, secret deals, survival and betrayal. Some may be telling the truth, others may be trying to bury it.
Archive: CNN; BBC; NBC; PBS; Al Jazeera.
Writer and showrunner: Josh Baker
Investigative producer: Sara Obeidat
Series producer: Simon Maybin
Field producing: Ouday Al Hussein
Additional producing: Lucy Burns
Open source intelligence: Thomas Bordeaux & Gabor Friesen
Production coordinator: Gemma Ashman
Series editor: Clare Fordham
Head of BBC News Long Form Audio: Emma Rippon
BBC Radio 4 commissioning editor: Dan Clarke
NPR producer: Monika Evstatieva
NPR editors: Robert Little & Katie Simon
NPR executive producer for Embedded: Irene Noguchi
BBC World Service commissioning editor: Jon Manel
Composer: Firas Abou Fakher
Additional music: Karim Chehoury
Theme music: Sam Slater
Mix and sound design: Tom Brignell