Related Clues:

• Watch covertly
• Snoop (on)
• Microfilmer, maybe
• Sneak a peek
• F.B.I. employee: Abbr.
• Double agent
• CIA operative
• Writer's helper: Abbr.
• Be a snoop
• Black or white Mad character
• Writer's rep
• "I ---"
• 007, for one
• Telephoto lens user, maybe
• Spotter