House of Horrors

You keep knocking on the picture until you get to 51 knocks, and then stop.

Suddenly, the picture starts to move. Behind the picture was a hidden door.

"That must be my way out!" You say to yourself. You remember that you saw a key-looking thing on the table and you walk over and grab it. Feeling excited, you run across the room as fast as you could and shove the key in the key hole and opened the door.