The Hidden Room — Kate Kae Myers

After Kenley is dumped at the family ranch, she does the one thing her mother asked her not to: she searches for, and finds, the abandoned castle called the Chateau. Fascinated by its eerie beauty, she can't seem to stay away. And then there's darkly handsome Zefram who warns her of its dangers -- until he discovers she has unexplained knowledge about the place. Soon he enlists her help in hunting for a hidden room rumored to hold the secrets of the Chateau. But what Kenley doesn't realize, until it's too late, is that some doors should never be opened.