One of John Cheever's best known (and most often dramatized) short stories is basis for this tense episode. While riding home from his office on the 5:48 commuter train, married suburbanite James Blake (Zachary Scott) is confronted by Iris Dent (Phyllis Thaxter), his former secretary -- and former mistress. Pulling a gun on Blake, Iris intends to exact vengeance for being spurned and humiliated by him. Although the situation heats up as the train ride continues, Iris' revenge turns out to be a dish best served cold -- and dirty. ~ Hal Erickson, Rovi