Related Clues:

• Hush-hush job
• CIA employee
• Infiltrator
• Observe covertly
• Emulate a peeping Tom
• Man of intelligence?
• Intelligencer
• 007, for instance
• Smart, for one
• Espionage figure
• Watch surreptitiously
• Seek secrets
• Work undercover, in a way
• Covert operator
• Cosby's first prime-time role