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Financier Harry Winthrop (Franklyn Hanna) is tricked by a pair of spies, Varrie (L. Rogers Lytton) and Marcia Elmore (Julia Swayne Gordon), into giving his millions to foreign powers who do not have the United States' best interests at heart. But Winthrop's daughter Wynn (Anita Stewart) knows something is amiss and, with the help of Detective Concord (Robert Gaillard), gathers enough clues to foil the foreign agents' plans. Along the way she falls in love with Adams, one of the enemy camp (Rudolph Cameron). It turns out all right in the end, however, because Adams is actually a member of the U.S. secret service.