Related Clues:

• Burrowing animal
• Slapstick trio member
• Secret agent
• 20-Across, 38-Across or 55-Across
• Undercover sort
• Unwelcome C.I.A. discovery
• Mole
• Tail, maybe
• Sight
• Kind of glass
• Austin Powers, e.g
• Cloak-and-dagger type
• Wire wearer
• Marilyn Monroe mark
• Hale, for one