Secret Service in Darkest Africa is a 1943 Republic serial. It was Republic’s thirtieth serial, of the sixty-six produced by the studio.

It was a sequel to G-Men vs. the Black Dragon released earlier in 1943, again starring Rod Cameron as American secret agent Rex Bennett. This time Bennet faces the Nazis rather than the Japanese. As with the earlier installment, Bennet is supported by characters from some of the allied nations in World War II.

The serial is also known by the titles Manhunt in the African Jungles, changed when it was re-released in 1954, and The Baron’s African War, when it was edited into a 100-minute film for television in 1966.

Plot
In an attempt to control the entire Middle East and defeat the Allies, Nazi agent Baron von Rommler (Lionel Royce) captures and impersonates Sultan Abou Ben Ali (also Lionel Royce), leader of all the Arabs. Opposed to him is Secret Service Agent Rex Bennett (Rod Cameron), along with British reporter Janet Blake (Joan Marsh) and Chief of Police Captain Pierre LaSalle (Duncan Renaldo).

Cast
Rod Cameron as Rex Bennett, US agent.[2]
Joan Marsh as Janet Blake, intrepid reporter and aviatrix
Duncan Renaldo as Captain Pierre LaSalle, head of the French police in Casablanca and code breaker
Lionel Royce as Baron von Rommler, a Nazi impersonating Arab leader Sultan Abou Ben Ali
Kurt Kreuger as Ernst Muller, Sultan Abou Ben Ali’s personal secretary and Nazi agent
Frederic Brunn as Wolfe, Nazi agent
Sigurd Tor as Luger
Georges Renavent as Armand