coproduced by Martin Smith and Chris Durrance ; written by Jihan El-Tahri and Martin Smith ; produced and directed by Jihan El-Tahri ; a Frontline co-production with Alegria and Rain Media, Inc. in association with the BBC and Arte
a co-production of WGBH, Boston and Brian Lapping Associates in association with BBC and La Sept/ARTE ; producer/directors, Dai Richards ... [and others]
a Gardner Films production in association with PBS and Devillier Donegan Enterprises ; produced and directed by Robert Gardner ; Jonathan Grupper, series writer