Related Clues:

• Undercover cop
• Austin Powers, e.g.
• Bond, for example
• George Smiley, e.g.
• Secret trader
• One of Smiley's people
• One who bluffs a dealer?
• Mata Hari, for one
• Bust creator
• Secret agent
• Cop with a dangerous job
• Undercover sort
• Mole
• Popeye Doyle was one
• Tail, maybe