You are late for a job interview in a very prestigious firm. When you fully assembled and were ready to leave, we found the front door locked. A key is to find you can not. A spare is somewhere in the middle of the house, but it is well hidden. To find him, you will need to solve a couple of dozens of puzzles and riddles. Your parents will return in a couple of hours, and you do not like. It should hurry if you do not want to miss your appointment.