Marathon Man - John Schlesinger

In New York City, the brother of an infamous Nazi war criminal is killed in a head on collision car accident. Shortly thereafter, members of a covert US government group called "The Division" begin to be murdered one by one. When the brother to one Division member sees his brother knifed to death, it is revealed that former SS dentist Szell, "the White Angel" of Auschwitz, is wrapping up loose ends to smuggle priceless diamonds from the United States.