Though Katherine Howe's novel The Physick Book of Deliverance Dane is about witchcraft, it is the opposite of a Harry Potter tale, as it moves at the pace of a research paper-- which isn't surprising, considering Howe is getting her PhD. in American Studies at Harvard; Howe is a direct descendant of Elizabeth Proctor, and the novel flashes from the 1692 witch trials to the present . . . and while it was a little slow, it was detailed and authentic, and I especially liked her essay at the end explaing the veracity of her historical references: I give it seven mandrake roots out of ten.