The Pelican(1974)

Paul has been imprisoned for ten years for passing counterfeit money. He feels victimized enough, both for the prison time and for the crime which led to it; he committed the crime to give his wife the nice things she asked him for. When he discovers that she has remarried a quite wealthy man, he is outraged. However, his ire is not due to her disloyalty to him; he loved their only son to distraction, and now the boy has no knowledge or memory of him.