Related Clues:

• Burrowing pest
• CIA turncoat
• Saboteur, e.g
• Burrowing spy?
• Penetration agent
• Shrew cousin
• Hedgehog's cousin
• Tunneling critter
• Spy also called a "sleeper agent"
• Spot troublesome animal in garden?
• MI6 concern
• Target of an exterminator's smoke bomb
• Tunnel excavator
• Facial mark
• Skin imperfection