a film by Kunhardt McGee Productions, Inkwell Films, and THIRTEEN Productions, LLC, in association with Ark Media ; senior producer, Rachel Dretzin ; written by Henry Louis Gates, Jr. ; directors, Phil Bertelsen, Leslie Asaka Gladsjo, Sabin Streeter, Jamilla Wignot
a Mitchell Beazley Television, RM Arts/Channel Four co-production in association with the Nigerian Television Authority ; written and presented by Basil Davidson ; produced by John Percival ; directed by John Percival, Christopher Ralling, Andrew Harries, and Mick Csaky