Related Clues:

• Secret trader
• One of Smiley's people
• Bay of Pigs org.
• Mata Hari, for one
• 'The Com-pany'
• Secret agent
• OSS replacer
• Org. once headed by Bush
• KGB counterpart
• Undercover sort
• Agcy. once headed by a Bush
• Mole
• Bush's old org.
• Tail, maybe
• Langley org.