Thunder: The Shadows Are Stirring: Thunder Stories, Book 1 (Unabridged‪)‬

When Olivia Williams and her two younger brothers awake from a car crash, they're positive their world has changed. The talking horse is a big clue. And he has a lot to say. According to Thunder, fairies, magic, and good ol' St. Nick are all for real - on some level. Which would be incredibly awesome, but there's a problem: A rift has formed between the layers of existence, and evil Sliders are taking advantage of it - bringing violence, fear, and hatred with them.

Now, the three siblings are immersed in a tangle of reality and fantasy. One with trolls, freakish amphibians, and town-devouring rats. Fortunately, help is on hand as Thunder introduces them to a world of Shifters and other powerful beings. Like Olivia's very own Guardian, Ethan. Whom she actually does like. A lot. How could she not, when his job is to stand between her and death?

With humanity at stake, the Williams children must do more than accept the unbelievable. They must accomplish the impossible. The rift needs to be sealed, and they're the only people alive with the potential to do it.