| Clue | Source | Date |
|---|---|---|
| 1972 thriller by Frederick Forsyth, about a Nazi organisation which protects former SS members (3,6,4) | ||
| Thriller by Frederick Forsyth, first published in 1972 (3,6,4) | ||
| 1972 novel by Frederick Forsyth | The Times Specialist Sunday | 03 Feb 2019 |