A werewolf and a witch battle evil in a parallel universe where scientifically-approached magic takes the place of technology. Originally written in the 50s and published as a book in the early 70s and just recently released on Kindle, it's stood up well in most respects, except for the sexism typical of the 50s. But if you look past the language, the women kick butt as well as or better than the men. Nice to re-read one of my old favorites.