written, produced and directed by William Cran ; a Frontline coproduction with InVision Productions, Ltd. in association with BBC-2 ; WGBH Educational Foundation
a Frontline production ; in collaboration with ProPublica and the Investigative Reporting Program at University of California Berkeley Graduate School in Journalism ; written and produced by Andrés Cediel & Lowell Bergman ; produced by WGBH Boston
a Frontline production with Kirk Documentary Group in association with Startbox Films ; writers Mike Wiser & Michael Kirk ; producer and director, Jessie Deeter