Go behind the scenes of National Geographic's 'Lion', where Faith Musembi spent four years following Kio and a pride of lions in Kenya. There’s just no telling what would happen when you’re making a show, and your star is a lion. Kenyan producer and director Faith Musembi, Musembi, along with a large crew, spent four years at the mercy of the natural world to create the series. Summer (another character) had to be Summer,” Musembi said, adding that differences between the roarers became clear the longer the team spent with them. And after four years with the pride, the characters were no longer interchangeable lions to Musembi either.