Related Clues:
- One cracking codes and eavesdropping
- Security breacher
- Operative sneaking information
- Black Widow, for one
- Six-foot mole
- Mole in the bushes?
- Keep an eye on those turning up in The Apocalypse
- Melissa McCarthy secret agent movie
- Do some recon
- Word with glass or ware
- Observe on the sly
- One may slip past a 4-Down
- Notice ends of Möbius strip rarely
- Secret observer
- International ___ Museum (attraction in D.C. with a 'Stealing Secrets' gallery)