AllMovie

When G-Men Step In is Columbia's spin on Paramount's "FBI" B-picture series. On this occasion, the feds are after a gang of clever racketeers who've stuck their dirty thumbs in several pies, from charitable organizations to advertising agencies. The main conflict boils down to the antagonistic relationship between gangster boss Frederick Garth (Don Terry) and his G-Man brother Bruce (Robert Paige). As the plot thickens, Bruce comes to realize that Frederick has been working on the "right" side all along. The inescapable Jacqueline Wells is the girl in the case, while Horace MacMahon provides some unexpected chuckles.