Desc: Le diamant noir: Directed by Alfred Machin. With Albert Dieudonné, Blanche Derval, Fernand Crommelynck, Delaunay. Luc Ogier is the secretary of a rich nobleman. Engaged to the charming Linke, he looks forward to the day of their wedding. Unfortunately, a valuable jewel is stolen and not only is Luc wrongly accused of the theft but all turn against him into the bargain. Put off by such injustice, the poor man decides to distance himself. He accompanies the explorer Santher on an expedition to the Congo...