Art critic Clement Greenberg, champion of abstract expressionism, is more interested in silencing his rival Harold Rosenberg than with the threat of nuclear destruction.Greenberg is driving from New York to the Emma Lake artist colony in Saskatchewan, where he intends to silence Rosenberg once and for all. With him is infamous Marxist Louis Althusser, who escaped prosecution for strangling his wife in France on an insanity plea. Althusser is heading...