Back in the late 1940s, Seretse Khama--prince of Bechuanaland and the first president of Botswana--met, fell in love with and married a common English girl working as a clerk at Lloyd's of London. The interracial relationship shocked much of Africa and certain people in England as well, making it fine fodder for a historical biopic. David Oyelowo (Selma) stars Khama, while Rosamund Pike (Gone Girl) takes up the role of his paramour, Ruth Williams. British filmmaker Amma Asante (Belle) adds some workmanlike direction to Oyelowo and Pike's quiet chemistry. 111 minutes PG-13.