Blackbirds (1915)

Hawke, Jr., son of a famous New York detective, is challenged by his father to capture "The Blackbirds," a gang of smugglers, finds himself stranded in Algiers. Aware of Hawke's presence, Bechel, the Blackbirds' leader, instructs his accomplice, Leonie Sobatsky, to become friendly with the Crockers, a nouveau riche couple, and later in America, exchange a fake Oriental rug for a $10,000 genuine one which they recently purchased from one of Bechel's contacts. On the steamer returning to the United States, Leonie meets Nevil Trask, an English jewel thief posing as a nobleman. After Hawke secures a position in the Crocker home in New York as a guard for their jewels, Leonie, who now loves Trask without knowing that he is a thief, decides not to switch the rugs, but Hawke, eager to capture Bechel, tricks Leonie into taking the antique. When she sees Trask stealing the Crockers' jewels, they both confess their crimes and plan to reform. Hawke overhears, and follows them to Bechel's headquarters, where he captures the leader. After Trask and Leonie promise to marry, Hawke sets them free.