Stanislas Oscar Seminario, aka SOS, is a young explorer, just back from Africa, visiting old friends: the Pescara's. But the father keeps receiving anonymous letters. And soon a mysterious murder is committed. SOS begins to investigate...
DIRECTOR
CAST
Paul Meurisse
Stanilas Octave Seminario SOS, détective
Micheline Francey
Muriel Pescara, la fille
Gilbert Gil
Charles Pescara, le fils
Pierre Renoir
Gérard Pescara, le père
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