I devoured this book and learned a lot. For an academic work, it's surprisingly readable, far less dry than many books in the field.
Graf surveys magic in the Greek and Roman worlds from roughly the sixth century BCE to late antiquity, drawing on magical papyri, curse tablets and literature. He covers binding spells, erotic magic, divination, ritual specialists, initiation and encounters with the gods. Most valuable for me was his handling of the notoriously difficult question of what "magic" meant in antiquity. Rather than applying Frazer's old magic-versus-religion distinction, he examines how Greeks and Romans themselves used the category, including how accusations of magic marked certain practices as suspect or marginal.
Graf overturns more than a few familiar ideas. Curse tablets were usually less about cursing than binding: immobilising a rival in court, love, business or sport. And while ancient literature is full of women working love magic, from Medea to Simaetha, the spells mostly show men trying to bind women. The literary witch, it turns out, says more about ancient anxieties than about who practised magic.
The book first appeared in the mid-1990s, and scholarship has since moved on. The category of magic has been questioned further, and recent work pays more attention to social context, material evidence, regional variation and the blurred boundaries between magic, religion, medicine and divination. Christopher Faraone and Sarah Iles Johnston are good places to go next.
Even so, this remains an important book and an excellent starting point for anyone seriously interested in ancient Mediterranean magic. I came away with pages of notes and sticky notes bristling from every edge.