Related Clues:

• Mole, e.g
• ''I ___'' (classic TV show)
• Mole, e.g.
• Engage in espionage
• Beauty spot
• Source of a leak, perhaps
• Cloak-and-dagger sort
• ___ fit
• Insectivorous mammal
• Source of a leak
• Embedded spy
• 007, e.g.
• Keep tabs (on)
• Pier
• Counterspy