Related Clues:

• One undercover
• One watching for traffic?
• Decoy for dealers
• Popeye Doyle, e.g.
• Pusher chaser
• Antidrug officer
• With 5-Down, snooping aid
• Thriller hero, often
• One who pulls in pushers
• 'Alias' type
• Dealer's adversary
• One with a code name, perhaps
• Nathan Hale, notably
• Bug planter
• A crack investigator?