Eugene O’Neil, the great American playwright, has contributed to the revelation of problems of different types of humanity at the time of World War First and the Second. This paper deploying content analysis research method deals with the playwright’s revelation of morality crisis even within the very deep parts of the family and the society at that time. The paper more specifically manifests the father-son contradiction in the family as the visible illustration of morality crisis at that time in his wok The Rope. It shows the playwright’s tact in his maneuver over the theatre and its elements in the creation of a modern tragedy on the line of revealing such themes as his artistic objective. His techniques reveal that the seemingly controversial father-son relationship has an ambiguous and disastrous outcome.