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...
Directed byJean-Devaivre
Written byPierre Apest�guy (novel), Jean-Paul Le Chanois (screenplay), Jean-Paul Le Chanois (dialogue)
CountryFrance
Runtime91 min
On screen
Paul Meurisse
Micheline Francey
Gilbert Gil
Pierre Renoir