"A Retrieved Reformation" is a short story by American author O. Henry first published in The Cosmopolitan Magazine, April 1903.

In 1910, dramatist Paul Armstrong adapted the story into a highly successful Broadway play under the title Alias Jimmy Valentine which ran 155 performances at Wallack's Theatre in New York.

[1] The character of Jimmy Valentine is taken from life but there is a close parallel to the leading incident in chapter XLII of Hugo's Les Misérables.

[3] Safecracker Jimmy Valentine was released from prison after serving less than ten months of a four year sentence, due to his criminal connections.

In the following weeks, a few cash robberies are committed, and the detective who landed Valentine in jail in the first place, Ben Price, is called to work on the new case.