Possible Clues:

• Dept. of Justice agency
• G-men's org.
• Christopher A. Wray's org
• Department of Justice div.
• Hoover's office
• J. Edgar Hoover's gp.
• Christopher Wray’s org
• Secretive org.
• It did in Dillinger
• Org. in 'Judas and the Black Messiah'