Passionate Productions for BBC ; produced for NOVA by Holt Productions, LLC ; WGBH Boston ; produced and directed by Jemima Harrison and Sarah Holt ; writer for the BBC, Jemima Harrison ; executive producer for the BBC, Richard Klein ; senior executive producer, Paula S. Apsell
produced by Philomath Films ; in association with the Independent Television Service and the BBC ; Hank Rogerson, director and writer ; Jilann Spitzmiller, producer