Madeline Matzen

A terrible toothache causes Jack Robin to stop his automobile in front of the home of Dorothy Mason. Noticing a flat tire, Jack attaches his automatic pump and forgets about it as he listens enthralled to Dorothy's singing. When the sound of the burst tire brings Dorothy running out, Jack feigns injury so he can be nursed by her. After he leaves the house, and Dorothy's father discovers some important invention plans missing, Harlan Graves, Dorothy's suitor, suggests that Jack stole them. Jack, suspecting Graves, breaks into Graves' home to clear himself and meets a real burglar, "Spider" Kelly, who adopts Jack as his guide. They blow up a safe at a house party where Jack suspects the plans to be hidden. The papers are found, Graves is arrested and Spider, disappointed that Jack made such a mess in blowing the safe, goes off, leaving Dorothy and Jack happily alone.

Giulia, a Neapolitan girl, much against her will, becomes the mistress of a wealthy gangster. Her "protector" is stabbed to death by Giulia's hot-headed musician lover Tony (Francis McDonald), whereupon the heroine takes refuge in the villa of French playwright La Farge. Under La Farge's careful tutelage, Giulia develops into a famous actress, capturing the heart of the Duke De Chaumont. Though LaFarge himself has fallen in love with the girl, he does not stand in her way when she accepts the Duke's proposal. But Giulia has not reckoned with Tony, who is still crazy about her and still willing to kill any man who stands in his way. Tony murders LaFarge, then sets his sights on the Duke, intending to kill the poor fellow during the wedding ceremony. Hoping to save the Duke's life, Giulia pretends to have fallen out of love with him and returns to Tony.