Related Clues:

• Work in the garden
• Bond, for example
• George Smiley, e.g.
• Secret trader
• One of Smiley's people
• Mata Hari, for one
• Secret agent
• Hoe target
• Undercover sort
• Mole
• Grower's bane
• Tail, maybe
• Sight
• Kind of glass
• Austin Powers, e.g