Chief of the German secret service in Paris has been ordered to secure for his government the service of the most clever and beautiful woman obtainable.

Mary marries Claude, a rich playboy, to please her invalid mother who becomes ill before they leave for a South American honeymoon.

Four lifelong friends share one very special summer. They develop an enduring bond despite their distinctly different emerging personalities.

Angela Chiaromonte is the daughter of a wealthy Italian prince who is killed in a fall from his horse. Though Angela stands to inherit half of a large estate, her older half-sister burns the will and thus inherits everything herself, throwing Angela into poverty. Fortunately, Angela is engaged to marry dashing Captain Giovanni Severi - but he soon is captured by Arabs while on an expedition to Africa. Believing him dead, Angela, dedicating her life to his memory, becomes a nun, unaware that her lover has escaped his captors and is returning to Italy. The dramatic climax takes place against a backdrop of the eruption of Mount Vesuvius.

Lithuanian immigrant, Jurgis Rudkus, gains a job in the Chicago stockyards. Once working at the stockyards he meets and marries Ona. But due to cut backs at the stockyards, loses his job, and they fall into financial hardship. Ona, in order to get money to feed their child, engages in sexual activity with her husband's foreman, Connor. Connor, rapes her. When Rudkus finds out about the affair, he throws Connor into a cattle pen where he is killed. While in prison Ona dies. When Rudkus gets out of prison he becomes an advocate for women via the Socialist Party. Considered a lost film.

Loyal slave of the aristocratic Dabney family, Dan is overjoyed when Raoul becomes engaged to Northerner Elsie Hammond and his sister Grace becomes engaged to Elsie's brother John. When the Civil War breaks out, the heartbroken Hammonds return North and John joins the Union army. Raoul joins the Confederacy, but his vindictive overseer, Jonas Watts, becomes a Union officer. Watts takes Grace prisoner, but before he can act on his desires, John rescues her.

When Roberta Carruthers' father, Capt. Carruthers, is killed in France during the war, she comes to live in the US with her uncle. When she finds out that her uncle is under the impression that his brother had a son and not a daughter, she decides to disguise herself as a male, and calls herself Bob.

While developing a powerful explosive, naval officer Paul Towne introduces his friend Richard Tracy to Judith Corbin, his friend since childhood. For years, Paul had assumed that he would marry Judith, but when Richard proposes, Judith, tired of waiting for Paul, accepts. Soon after the marriage, Richard becomes more interested in the new explosive than in his new wife, and to pay off gambling debts, he agrees to steal the formula and sell it to a foreign government.

Driven from Russia by the persecution of the police, who had caused the death of his wife, was Ivan Pavloff, a Nihilist, accompanied by his two infant twin daughters Olga and Nina, en route to America in search of freedom.

Crime drama about the rivalry over a new invention and a nice girl.