[Laura Cantwell] said he, too, was unaware of the magnitude of his acquisition. That is, until he showed the book to Laura. "She said, 'Dad, do you realize how huge this is?' " Cantwell recalled. "I said to my wife that night that I could probably sell this book for a lot of money. She said, 'Under no circumstances do you sell that book.' "

Cantwell says he has no intention of revealing what adventures await [Harry Potter] in the newest volume, and thus spoiling the fun for legions of Potter fans worldwide.

Just how a muggle (a non-wizard, in Potter-ese) like Laura got her hands on the most hyped book in publishing history since, well, since the last Harry Potter book, is a mystery young Harry himself might have difficulty unraveling.