Related Clues:

• Smiley, Smart or Solo
• MI6 member
• Person with intelligence
• Use a hidden camera, say
• Hush-hush job
• Infiltrator
• 15-percenter: Abbr.
• Observe covertly
• Emulate a peeping Tom
• Man of intelligence?
• Intelligencer
• 007, for instance
• Smart, for one
• Espionage figure
• T-man, e.g.