Philandering husband George Montfort purchases railroad tickets for a weekend tryst in the mountains with his latest paramour. When his wife Yvonne finds the tickets, George hastily explains that they were bought as an anniversary present for her. Yvonne doesn't believe George, but she decides to use her ticket anyway, while George remains behind in Paris on "business."
Unfortunately the movie The Popular Sin is not yet available on HBO Max.
| Directing | Malcolm St. Clair | Director |
| Writing | James Ashmore Creelman | Writer |
| Camera | Lee Garmes | Director of Photography |
| Writing | Monta Bell | Story |
