| SEBASTIAN | Survivor of The Archers broadcast absent as ISIHAC's beginning |
| RESEARCH | Delve into end of The Archers broadcast (8) |
| FIFTEENTHLETTER | Item missing in this puzzle's theme that's absent as well in the fill and clues |
| ATTEND | Not be absent, as in school (6) |
| RANCHEROS | Farm workers on Archers broadcast (9) |
| PURCHASER | Customer turned up before Archers broadcast (9) |
| COMANCHE | Horse who was the sole documented survivor of the US cavalry at the Battle of the Little Bighorn (1876) (8) |
| BROWN | The 'Unsinkable Mrs _', survivor of the sinking of the Titanic (5) |
| ISHMAEL | Narrator of the 1851 Herman Melville novel Moby-Dick; the sole survivor of the Pequod (7) |
| DEMASDUIT | Real name of Mary March, one of the last known survivors of the Beothuk culture of Newfoundland |
| NOAHSDOVE | The Ancient Mariner's port, for the most part, offered an olive branch to survivor of the flood (4'1,4) |
| CUTTY | - Sark; named after a character in Tam o' Shanter by Robert Burns, the only survivor of the British tea clippers (5) |
| ALIEN | 1979 movie with the line "This is Ripley, last survivor of the Nostromo, signing off" |
| ADRASTUS | In Greek mythology, who was the only survivor of the Seven Against Thebes expedition? (8) |
| DARLING | Daughter of a lighthouse keeper on the Farne Islands who rescued stranded survivors of the wrecked Forfarshire (7) |
| PARR | Fish, survivor of the 16th century? (4) |
| AENEAS | Notable survivor of the Trojan War |
| NOAH | Survivor of the Deluge |
| LOST | 2004-10 US sci-fi action drama following the survivors of the crashed passenger jet Oceanic Airlines Flight 815 (4) |
| FARNEISLANDS | Archipelago from which Grace Darling and her father conducted a rescue operation to save survivors of the shipwrecked vessel Forfarshire (5,7) |
