Architect Peter Ibbetson is hired by the Duke of Towers to design a building for him. Ibbetson discovers that the Duchess of Towers, Mary, is his now-grown childhood sweetheart. Their love revives, but Peter is sentenced to life in prison for an accidental killing. Mary comes to him in dreams and they are able to live out their romance in a dream world.
Two men, one of them a villainous hypnotist, contend for the same woman, unaware that she suffers from dual personality disorder.
The cabaret act of husband-and-wife dancing team Peggy and Joe Blondin is broken up when Joe becomes consumptive and is ordered West to recuperate. Peggy remains in New York to maintain the couple's income but gradually becomes desperate when letters sent her by her husband request more and more money. Joe's letters actually are being intercepted and rewritten by millionaire Harlan Quinn, who has designs on Peggy and wishes to portray Joe's situation as hopeless. After receiving a particularly alarming letter, Peggy consents to sell her honor to Harlan.
On a beach in southern Italy, Gianna Russelli practices her dancing with her devoted brother Russino, looking forward to the day when she will begin formal dance studies. One day the beautiful Countess Michetti comes to the village and engages in a flirtation with Russino, but when her former lover, Prince Viscomte, arrives with his closest friend, Count Paul Trovelli, the countess resumes her affair with the prince.
A young woman doesn't want to get married, but simply live together with the man she loves. This leads to problems when the man dies and she's left with a child.
Mr Bernhard has financial difficulties. He has fallen into the hands of broker Mr Pouzer. In desperation, Bernhard's daughter Julia visit Pouzer to ask for mercy for her father. Yes, Pouzer replies, if I get you in return.
A young woman does strange things, which are explained when it is discovered she is a sleep walker.
Miss Edna White is very much grieved when she has not a suitable gown to wear at a party. Mrs. Donald, a wealthy customer, calls and asks Edna to try the dress on she has bought for her inspection. It answers her purposes, and Edna is instructed to deliver the dress that night, on her way home.
The heroine had little time for romancing newspaper reporter Walter Jameson, what with Doctor X, alias Marcus Del Mar, threatening American democracy in general and master detective Craig Kennedy's designs for a new torpedo in particular. Whenever Doctor X has Elaine or Jameson in his grasp, they are inevitably saved in the nick of time by a mystery figure garbed in black.