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Federal Bullets is a leisurely paced Monogram crime melodrama with not a few clever plot twists. The FBI, represented by Milburn Stone and William Harrigan, investigates a seemingly respectable charitable organization. In fact, the enterprise is a front for a crime ring, headed by Ma Barker clone Zeffie Tilbury (Trivia note: Ms. Tilbury was totally blind, and had to learn her "blocking" by rote). Agent Stone poses as a crook in order to infiltrate Zeffie's mob. Federal Bullets was directed by Karl Brown, a onetime cinematographer who learned his craft under the tutelage of D. W. Griffith. The film was based on a story by federal operative Maj. George F. Elliot.