The small-town prudes of Lynnfield are up in arms over 'The Sinner,' a sexy best-seller. They little suspect that author 'Caroline Adams' is really Theodora Lynn, scion of the town's leading family. Michael Grant, devil-may-care book jacket illustrator, penetrates Theodora's incognito and sets out to 'free her' from Lynnfield against her will. But Michael has a secret too, and gets a taste of his own medicine.

The plot, old-hat though it is, does provide an opportunity for that wonderfully seedy villain, David Dirby, to do his dirty work and more importantly, to tie all the thrillingly on-the-spot railroad footage together. Railroad buffs will enjoy all the atmospheric detail director Johnson has obtained by filming in real freight yards and inside and alongside real steam engines and rolling stock.

As a result of arresting a nightclub singer, Millie Garland, for speeding, Tim Daley, of the California Highway Patrol, incurs the enmity of the gangster, "Trigger" Talano, who frames him and brings about his disgrace; but Tim organizes a band ox ex-criminals and turns the table on the racketeer with a vengeance.

Kitty Kelly (Bessie Barriscale) has just graduated from medical school and she decides to set up business in a Western mining camp. Because she is pretty, all the miners come up with various ailments just so they have a chance to spend time with her. The one that wins her heart is ranch foreman Bob Lang (Jack Holt), but a wrench is thrown into the romance when Kitty comes to the conclusion that he drinks too much.

When a smart-alec street kid's father, a policeman, is killed in the line of duty, the boy turns over a new leaf and goes to work to support his mother, brothers, and sisters. He gets a job as an usher in a theater but really wants to become a policeman to avenge the death of his father. He soon finds himself involved in a fake kidnapping, real gangsters and a tip on the identity of the man who killed his dad.

Miles Machree (J. Warren Kerrigan) meets Irish-American Sheila Lynch (Fritzi Brunette) when she travels through Ireland with her father (James O. Barrows). Soon after the Lynch's return to the States, Miles follows, and through his uncle's connections, gets a job on the New York City police force.

Robert Castleback is in possession of secret papers which could bring a certain prince to power under conditions which would make Castleback a ruling force in Europe. Master crook Arsene Lupin becomes aware of Castleback's bid for power and, in the interests of France, begins a search for the plans.

A young man in financial difficulties persuades his wife to help him blackmail a supposedly wealthy man.

Opera student Annette Monard meets composer Jonathan Street, and in a buoyant, alcohol-fueled evening, the couple marries. Sincerely falling in love, Jonathan encourages the talented Annette to sing — yet when his own attempt at an opera fails, Jonathan lashes out at Annette's success. Despite her husband's jealousy, Annette embarks on a successful career that allows her to secretly fund Jonathan's opera, bringing their marriage to a crisis.

This short follows the political career of Theodore Roosevelt, beginning in 1895, when he was appointed police commissioner of New York City. In 1897 he was appointed Assistant Secretary of the Navy. His charge up San Juan Hill during the Spanish-American War in 1898 is re-created. He becomes vice president in March 1901 and assumes the presidency when William McKinley is assassinated six months later. According to the narrator, Roosevelt refused to be beholden to political bosses, doing what he believed to be right for the American people.