Related Clues:

• Mole
• Tail, maybe
• Sight
• Kind of glass
• Austin Powers, e.g
• Cloak-and-dagger type
• Wire wearer
• Hale, for one
• Mole, e.g
• ''I ___'' (classic TV show)
• Mole, e.g.
• Engage in espionage
• Cloak-and-dagger sort
• 'I'm just kidding!' indicator
• Happy emoticon