The Southern Star is based on a novel by Jules Verne ,one published under a number of different titles .It is most widely known by the title used in the movie but has also been published as "The Southern Star Mystery" and "The Vanished Diamond".
The setting is French West Africa(changed from South Africa in the novel) and the period is immediately before the outbreak of World War One. The star is a large diamond which goes missing and is found by banjo playing American geologist Dan (George Segal).It is actually the property of business tycoon Kramer (Harry Andrews) whose daughter Erica (Ursula Andress)Dan is in love with .Complicating matters is the fact that Kramer's head of security Karl(Ian Hendry)is also after both the diamond and Erica and has a large force of men to ensure he gets both .In particular he has a sidekick Plankett (Orson Welles) a ,man fond of drilling his troops to records of bugle music .
The greatest asset of the movie is its striking location photography of Senegal which ensures the movie is always good to look at .It is also pretty well acted -although I did wonder how Ursula Andress managed to get her hands on full make up ,including mascara ,in the jungle .Welles in particular seems to be enjoying himself hugely .
the action when it comes is fine and the movie has a lot of humour -which is my big problem with it .I prefer my period adventure straight and details like the banjo playing and bugle records grate on me a tad Its a minor grouse ,nothing more and the movie is an enjoyable romp that may have relatively little to do with Verne but is a pleasant diversion on a wet and windy afternoon