What waits in the woods discussion

So, Randy, what's this book about?

This book is about 4 "friends" that go on a camping trip and nothing seems to go right. Callie has some of the worst days of her life. She finds out her boyfriend had some sort of relationship with her other friend peneplope and that sends the situation into a tailspin. I feel like if i told most people how it ends i dont think someone that is halfway through the book would believe how it ends