Related Clues:
- Do undercover work
- Plotted plant?
- CIA sort
- Agent 'embedded' in this puzzle's theme answers
- Person on the alert for snow?
- Work under cover, in a way
- Invisible ink user
- Cop after pushers
- One wearing a wire, perhaps
- Word repeated in Mad magazine's '___ vs. ___'
- Telephoto-lens user, perhaps
- Use binoculars, perhaps
- Narcotics cop
- Undercover agent of a sort
- 'Mission: Impossible' figure