You shouldn't judge a book by it's cover, instead, you should read every single book to see what every book is about before you even come close to judging its viability.
“Can a magician kill a man by magic?” Lord Wellington asked Strange.
Strange frowned. He seemed to dislike the question. “I suppose a magician might,” he admitted, “but a gentleman never could.” — Susanna Clarke, Jonathan Strange & Mr Norrell
