a Nova/WGBH production ; produced by Matthew Barrett, John Rubin, and Sarah Holt ; written by John Rubin ; directed by John Rubin, Rushmore Denooyer, Serena Davies, and Sarah Holt
a Frontline production with Kirk Documentary Group in association with Startbox Films ; writers Mike Wiser & Michael Kirk ; producer and director, Jessie Deeter
a co-production of JTN Productions and Thirteen ; in association with NDR and WNET.org ; produced and directed by Mike Dewitt ; written by Mike Dewitt, Daniel Jonah Goldhagen
WGBH ; Frontline co-production with American University School of Communication's Investigative Reporting Workshop ; written, produced and directed by Rick Young