The filming locations incorrectly list the former Reading Terminal in Philadelphia as the filming location of the opening scene, while in fact the former Central Railroad of New Jersey Terminal in Jersey City ,NJ was used as a stand-in for Reading terminal. A quick shot of a CNJ train on an adjacent track can be seen.
This is one of a very few movies that stars two actors who were married to each other, each of whom won an Academy Award for acting during their careers-Paúl Newman for The Color of Money, and Joanne Woodward for The Three Faces of Eve.
The trivia item below may give away important plot points.
Mr McHardie is often viewed as a cold-hearted businessman putting profit over happiness, and yet this may not be entirely fair. From his name and his accent, Mr McHardie may be guessed to be a good Scottish Catholic. With that perspective in mind, his advice to David Alfred Eaton to view marriage as an unbreakable contract even if it is preferable, as McHardie implies, that Eaton must take a loss -- even if that means staying married and taking a mistress is the outcome -- may be guided as much by his religious views as his business sense. McHardie makes it clear that this arrangement is preferable, though he also makes it clear that he does not condone it. Seeing it that way, McHardie may have in mind that Eaton staying married not only keeps him 'right' ethically, but also with God.