Related Clues:

• Ness, for one
• Police decoy, sometimes
• D.E.A. officer
• Govt. agent
• Rat (on)
• Snitch
• Eliot Ness, e.g.
• One whose work's a bust
• Agt. such as Ness
• Undercover worker
• Dillinger fighter
• D.E.A. agent
• Snow seizer
• Revenuer
• Ness, e.g.