| HYADES | Stars unknown in the underworld (6) |
| DOCTOR | Novel virus found in bones, unknown in the past (6,7) |
| PUSHER | Is he known in the underworld as "The Snowman"? (6) |
| OSIRIS | Teacher is one taken in by sailor - someone worshiped in the underworld (6) |
| SELENE | Vampire warrior played by Kate Beckinsale in the Underworld movies (6) |
| SOMNIA | Night-time visions, at rest in the Underworld's shadowy elm (Aen. 6.283) |
| EREBUS | Antarctic volcano named for a place in the underworld |
| HOLYLAND | Unknown in the country, Palestine in the Bible (4,4) |
| ZHIVAGO | Novel virus found in bones, unknown in the past (6,7) |
| LEBANON | The French bishop, unknown in the country (7) |
| CONSTITUTIONALMONARCHY | Walk forward in organised protest unknown in the UK, say |
| YESTERDAY | Aye, tread carelessly with the unknown in the immediate past (9) |
| ANTIQUITY | Possible worker with resignation statement, unknown in the past (9) |
| GOYA | Portrait painter unknown in the Panaji area |
| OVERTLY | TV role transforming unknown in the public eye |
| BEYONCE | Singer's live, unknown in the past (7) |
| MAZE | Answer unknown in the setter's puzzle? (4) |
| YANGTZE | Flower gnat mutated on unknown in the past |
| YOGA | Unknown in the past - twisted philosophy (4) |
| ANON | Unknown in the near future |
