Fair Oaks House Escape

You are very fond of riddles. This love and make you a good detective. You have a very good reputation and you take any business. One day a man came to you and said that his friend was lost in a strange house,"Fair Oaks", which is located in the forest. You agreed to help him, and went there. This house is very beautiful. You went inside and heard a strange cry, and then slammed the door sharply. Now you're trapped in this house.