Big story from Naples Italy via The New York Times. Here's the perp, Marino Massimo De Caro, now on trial.
It was one of the most dramatic thefts ever to hit the rare-book world, the disappearance of thousands of volumes — including centuries-old editions of Aristotle, Descartes, Galileo and Machiavelli — from the Baroque-era Girolamini Library in Naples. Now, prosecutors at a trial here are trying to show how such a wholesale violation of Western cultural patrimony could have taken place.
The very man charged with protecting these treasures, Marino Massimo De Caro, a politically connected former director of the library, is accused of being at the center of a network of middlemen, book dealers and possibly crooked conservators — all part of what prosecutors say is a sometimes corrupt market for rare books in which much is spent and few questions are asked. Apart from Mr. De Caro, 13 others are charged, including a priest.
Some interesting backstory on the theft here and and here from the International League of Antiquarian Booksellers.