| Clue | Source | Date |
|---|---|---|
| Pair in the four longest answers | Newsday | 01 May 2026 |
| Sue Grafton's "— for Undertow" | Eugene Sheffer | 10 Oct 2020 |
| Sue Grafton's '— for Undertow' | Eugene Sheffer | 22 Nov 2019 |
| "__ for Undertow" (Grafton novel) | ||
| Sue Grafton's '-- for Undertow' |