Related Clues:

• Keep watch
• Many a bugger
• Le Carre creation
• Plant or mole
• Saskatchewan's ____ Hill
• Observant individual
• Dangerous job
• Use a peephole, say
• 007, e.g
• Mata Hari was one
• Le Carre character, or Saskatchewan hill
• Plant, maybe
• One seeking intelligence
• Gain intelligence
• One making sidelong glances