Wrath of Love (1917)

Roma Winnet, the author of Jealousy, loves and marries Bob Lawson, but worries that her own difficulties with that emotion will destroy their relationship. When Dave Blake enlists in the secret service, he entrusts Ethel Clarke, his girlfriend and Roma's best friend, to Bob's care, an arrangement that immediately causes Roma to fret. While on furlough, Dave goes to see Ethel at Bob's home, but the visit is cut short when Bob suspects that Dave is being followed by spies. The sight of Bob and Ethel together rouses Roma's jealousy, a state exacerbated by secret rendezvouses between Ethel, Bob and Dave. Convinced that her husband is having an affair, Roma threatens him with divorce. That night, Bob receives a frantic note, supposedly from Dave, but when he arrives at Dave's hide-out, he discovers that the note was a set-up. After a fierce battle with the spies, Dave and Bob escape unharmed. Once misunderstandings are cleared up, the wrath of love is quelled and Roma reunites with Bob.