| Clue | Source | Date |
|---|---|---|
| One who infiltrates a political party for subversive ends (8) | ||
| Party infiltrator | The Times Concise | 30 Jul 2020 |
| Infiltrator: hear one's gaining access to hospital department | ||
| Infiltrator -- one penetrating in French meeting | The Telegraph Toughie | 04 Dec 2019 |
| Infiltrator captured by sentry is tagged |