Undetectable Poisons are a type of poison that are presumably undetectable by any method.[1]
History
Severus Snape assigned a "nasty" essay on them to his third year Potions class in January of 1994 at Hogwarts School of Witchcraft and Wizardry.[1]
Appearances
- Harry Potter and the Prisoner of Azkaban (First mentioned)
Notes and references
- ↑ 1.0 1.1 1.2 1.3 Harry Potter and the Prisoner of Azkaban, Chapter 12 (The Patronus)
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