| Answer | Crossword Clue |
|---|---|
| SLINK | Move covertly |
| ONTHEQT | Covertly |
| SUBROSA | Covertly. |
| INSECRET | Covertly |
| UNDERTHECOUNTER | Covertly |
| SPYON | Watch covertly |
| SPIESON | Observes covertly |
| SPIESON | Watches covertly |
| SPY | Watch covertly |
| FOISTED | Inserted covertly |
| SHADOW | Follow covertly |
| CREEPIN | Enter covertly |
| LEAK | Publicize covertly |
| SPYON | Observe covertly |
| SPY | Observe covertly |
| CRIB | Copy covertly |
| SPIESUPON | Monitors covertly |
| ROSA | Sub ... (covertly) |
| BCCS | Covertly drops a line to |
| PLAYFOOTSIE | Work together closely but covertly |
| BCC | Include covertly in an email |
| BCC | Send covertly, as a dupe email |
