Mildred Vandeburg, an heiress who devotes her time to a hospital that she has built in the slums, breaks her engagement to her fiancé, T. Huntington Forbes, because Forbes is only interested in horses and sports. Meeda Jones, a nurse employed in Mildred's hospital, is married to a criminal named Spike, who steals some jewels and convinces his brother Dan to fence them for him. When Dan is killed as the police try to arrest him, his wife dies of shock, leaving their baby girl homeless. To help the baby, Mildred decides to take her to Forbes's home, where she informs her former fiancé that there is a "lady in the library" waiting for him.

Betty Be Good is a 1917 American silent comedy film directed by Sherwood MacDonald.

Jilted on her wedding day, Maud Wainwright becomes a confirmed man-hater. Homesteading in the Southwest, she ignores the attentions of both bandit "Three Gun Smith" and Sheriff Steve Kennedy. When Smith's gang accidentally knocks over Maud's cabin, the men take her to Smith's cabin while they rebuild her dwelling. There, Maud discovers a mail pouch and believing that it was stolen by Smith, reports him to the sheriff, who persuades her to assist him in arresting the bandit. After Smith is captured, Maud discovers papers that prove he is actually a secret service agent and that the sheriff is the real bandit. Riding to Smith's rescue, Maud prevents him from being lynched at the hands of vigilantes and then proclaims her love for him.