Related Clues:

• Drug dealer's nemesis
• Buster?
• Nonuniformed police officer
• 'Traffic' cop
• Drug agent
• One who works with dogs, maybe
• Pusher's bane
• Drug pusher's enemy
• Drug enforcer
• Traffic stopper
• D.E.A. operative
• Pusher pursuer
• Bust maker, for short
• Prosecution witness, maybe
• Undercover person