Related Clues:

• Watch from the bushes
• I ____
• One doing the looking
• Jason Bourne, for one
• One enjoying the sights
• Agent of espionage
• Le Carré's Smiley, for one
• Peeping Tom, e.g
• Search for intelligence
• Good-looking person?
• One who checks you out
• Plant gathering information
• One who's "just looking"
• Stratego piece with a monocle
• One who bugs people?