filmed, produced and directed by Marcel Mettelsiefen ; co-produced and edited by Stephen Ellis, A.C.E. ; senior producer, Dan Edge ; an ITN production for WGBH/Frontline in association with Channel 4 and ZDF
series producer and reporter, Renata Simone ; a co-production of WGBH/Frontline and Paladin InVision Ltd. with Silverbridge Productions Ltd. and Channel 4 ; WGBH Educational Foundation