Gertie Jones, known among other thieves as "The Chatterbox" because she talks to herself while she works, becomes a rich woman's French maid after learning about her employer's $40,000 diamond necklace. To cover up the scratches left by her tools after she unsuccessfully tries to open the safe containing the necklace, Gertie telephones the police to report an attempted burglary. Jimmy Hartigan, a famous thief, arrives and after he and Gertie fall in love at first sight, he is arrested.