a co-production of Thirteen/WNET New York, BBC, and CBC ; series producer, William Cran ; directed by William Cran & Rebecca John ; producer, Rebecca John ; writer, William Cran
produced by Dan Edge, Sasha Joelle Achilli ; directed by Dan Edge ; Frontline executive producer, David Fanning ; a Frontline production with Mongoose Pictures and Quicksilver Media in association with the BBC ; WBGH Educational Foundation
produced for NOVA by BBC for WGBH Boston ; produced and directed by Guy Smith ; series producer (BBC), Zoe Heron ; managing director (NOVA), Alan Ritsko