TOXIN
| Date | Clue |
|---|---|
| 2021-06-29 | Poison |
| 2018-12-03 | Snake venom, e.g. |
| 2018-06-06 | Cause of a bee sting's sting |
| 2017-04-15 | Benzene or lead |
| 2016-03-17 | Venom, e.g. |
| 2015-11-18 | Scorpion's defense |
| 2015-03-07 | Sickening thing |
| 2012-05-06 | Botulin, e.g. |
| 2008-02-10 | Botulin, e.g. |
| 2005-07-25 | Poison |
| 2003-04-28 | Poison |
| 2003-03-06 | Snake venom, e.g. |
| 2003-03-05 | Poison |
| 2001-08-08 | Venom |
| 1997-10-22 | Antidote target |
| 1996-07-29 | Venom, for one |
| 1994-09-23 | Botulin, e.g. |
| 1993-12-16 | Poison |