Joseph Losey's first French production takes an infamous incident from the recent past--the 1942 roundup of Jews in Paris--and builds around it a gripping political and psychological thriller. But in the end it is Losey at his most moral, Losey of The Boy With Green Hair, turning a mystery of mistaken identity into a complex Doppelganger theme that goes beyond the question, “Am I my brother's keeper?” Alain Delon gives a thoughtful performance as Mr. Klein, an effete art dealer who lives off the profit of Jewish possessions sold in hasty flight from Occupation France. When he learns that he is suspected by authorities of being a Jew, he embarks on a search for his own Christian roots and the “other,” Jewish Mr. Klein for whom he is evidently being mistaken. Menace and irony meet in the murky doorways to his past, which lead like a labyrinth to mankind's present. Franco Solinas' script skillfully, deviously initiates and implicates the viewer into the horror. (JB)