Stop Thief (1920)

When Jack Dougan and Snatcher Nell, partners in crime as well as love, decide to purloin the gifts at the wedding of Madge Carr to James Cluney, Nell poses as a maid to gain entrance to the household. Soon after, articles begin to disappear and Madge's father, a kleptomaniac, begins to feel guilty, while the groom almost suspects himself. A detective is summoned, but Dougan, pretending to be Cluney, waylays him, pickpockets his badge, and then impersonates the officer of the law. After various adventures, Nell and Dougan make a getaway but, eventually cornered, return to the Carrs and tell their story. All is forgiven and the two couples share a double wedding ceremony.