Watch Idris Elba walk in Nelson Mandela's shoes for the trailer of the Justin Chadwick-directed biopic Mandela: Long Walk Home. Though it was first previewed at the Cannes film festival last month, the teaser serves as the first look into the flick based on the former South African president’s best-selling biography. Idris takes the lead with Naomie Harris playing his ex-wife Winnie Mandela. Popular South African actors such as Tony Kgoroge and Zolani Mkiva also star. Winnie Mandela's self-titled movie featuring Jennifer Hudson and Terrence Howard as Nelson is also set for a fall release. The movie hits theaters Nov. 29.