A scholar, Aris Fioretos, is investigating a single-occurrence word in ancient literature relating to Homer’s *Odyssey*. The word describes a specific herb Odysseus consumes before visiting the sorceress Circe, protecting him from her potentially harmful powers. Circe is known for her ability to transform people, often with devastating consequences, but the protective plant negates this threat. Fioretos’ research centers on identifying what this mysterious plant might be and its significance within the narrative. The text highlights Circe's dangerous nature, while emphasizing the crucial role of this unique herb in Odysseus’s survival. This discovery offers new insights into ancient beliefs regarding protection and the power of natural remedies.