Sundown (1941)

In Africa, At the onset of World War Two, the Germans try to get the local tribes to rebel against the British colonials. Captain Bill Crawford (Bruce Cabot) is a local commissioner who, with the aide of Major Coombes (George Sanders), discovers a the German plot to run guns to the natives. Zia (Gene Tierney) is the adopted daughter of Pallain (Joseph Calleia) who runs some trading caravans and posts, She agrees to help the British and joins Kuypens (Carl Esmond) the local Nazi chief, in order to find out more about his plots.