written, produced and directed by Thomas Jennings ; a Frontline production with Left/Right Docs in assocation with 2over10 Media in partnership with ProPublica ; WGBH Educational Foundation
A New Pictures production for Channel 4 and Masterpiece ; produced by Dan Winch ; directors, John Alexander, Jonathan Teplitzky, Paul Wilmshurst ; writers, Lisa McGee, Anna Symon ; created and written by Paul Rutman