My favorite book would probably be Artemis Fowl: The Time Paradox. This is my favorite book because it foreshadows danger for young criminal mastermind Artemis Fowl, Butler, and Molly Short. The antagonist is Opal, whose plan is to travel back in time to kill Artemis's mother so he was never born. But Artemis managed to defeat Opal through great trouble, and get rid of his magical powers that he obtained in the first book. I would rate this book a 10 out of 10. Go check it out.