A fingerprint expert figures out who killed the mayor.

A young woman disguises herself as a man and follows her fiancéé into the trenches during World War I to find out what war is really like.

G-men grab a gangster and a governor thanks to a clerk in the fingerprints division.

The Patent Leather Kid is a 1927 silent film which tells the story of a boxer who scoffs at fighting outside the ring... particularly for the United States once it enters World War I. Eventually, he is drafted, is shipped overseas, and performs a heroic act, which results in his being severely wounded.