A gang of counterfeiters made their headquarters in a large city and the police, despite many determined efforts, were unable to arrest them. One of the cleverest detectives in the city’s employ was a young girl who had won a name for courage. She learned that a certain woman counterfeiter, who had been sentenced to prison with her husband was soon to be released, and a daring plan occurred to her. The convict resembled the detective in appearance, and the latter felt sure that, properly disguised she would be taken for the other woman. Arrangements were accordingly made, the prisoner was detained in the penitentiary, while the detective, wearing the shapeless clothing given to discharged prisoners, slunk out of the prison yard. As she had anticipated she was met by men who warmly greeted her and escorted her to a waiting automobile. The woman counterfeiter had been noted as an engraver, and the detective’s ‘’friends” were none other than the gang of which the police were in search. At their headquarters the girl, firmly established in the gang’s confidence, learned all the information necessary and sent a cipher message to the chief of police, telling him to raid the place. The convict’s husband escaped from prison on the day set for the raid. He made his way to the counterfeiter’s headquarters, and when presented to his “wife” denounced her as an impostor and a spy. The girl was in great peril, but her courage did not fail her. Seizing a chair, she smashed the lamp and the room was shrouded in darkness. While the angry men floundered around trying to find her, the detective fled to the roof of the building in an effort to elude her pursuers. She was overtaken and seized. Death was very near at hand when policemen poured in from adjoining houses and the counterfeiters were made prisoners. The girl was complimented for her gallantry and promoted, and the woman whose place she had taken was released from prison and helped to lead an honest life.