Beautifully Broken [Book #1] (Completed)

When Cameron Blake gets his sister Emma away from their fighting parents for the day, he goes for a walk into the forest to clear his head and stumbles across what looks to be a small room. The door reads do not open but on the other side there is a voice asking to be let out.
Cameron being the kind person he is, opens the door.
What he finds is nothing he could have expected.

Really bad description sorry, I promise the book is better at the description. I'm terrible at writing descriptions. :)