| Clue | Source | Date |
|---|---|---|
| A book containing a list of medicinal drugs (13) | ||
| Formulary | The Times Concise | 18 Dec 2022 |
| Stock of medicines | The Times Concise | 25 Sep 2022 |
| Drug directory | Newsday | 11 Apr 2021 |
| Chemist’s manual | The Times Concise | 27 Sep 2020 |
| Injure a policeman in post office that is turning up a cache of drugs |