The Net of Deceit (1915)

Unable to purchase the formula of the explosive about to be sold to the government by Mallott, the representative of a foreign power orders Le Farge and Gabrielle to obtain it. Gabrielle, posing as Le Farge's sister, easily fascinates Fanshell, Mallott's secretary. The adventuress also meets David, a fisherman, and engages him in a violent flirtation.