Saturday Night is a 1922 American silent romantic comedy film directed by Cecil B. DeMille and starring Leatrice Joy, Conrad Nagel, and Edith Roberts. It was Leatrice Joys first film with DeMille.
When Shamrock comes to deliver laundry at Richards house, she meets him by chance and he falls in love with her. He proposes to drive her home and tells Iris to wait for him. She decides to go for a picnic with her chauffeur Tom and, after letting her car being crushed by a train, falls into Toms arms. In the evening, Richard provocatively dances at a formal party with Shamrock, which causes his sister Elsie to announce her brothers engagement to Iris. Tom, having read the announcement in the press wants to leave Iriss service but she tells him she wants to marry him. The fact that her rich uncle clear all her allowances and she is left without a penny does not deter her. As soon as he hears the news, Richard decides to marry Shamrock.Soon, Shamrock, who feels she is despised by Richards family and friends is almost as desperate as Iris who must live in a tiny apartment next to a railway and spend her time cooking and cleaning. She decides to hire Tom as her chauffeur despite Richard and Iriss opposition. One evening, they go together to Coney Island. When they come back, they find Richard and Iris waiting for them. Iris tells Richard they are too different to live together. While Richard and Iris try to persuade their spouses that they love them, a fire breaks out. Richard saves Iriss life. ........
Source: Wikipedia