Escape From Black House

Mr.Rick is one of the richest men in the town and he has a guest house outside the city near the lake. Recently he brought a new Audi car which is his favorite one and he kept the spare key in the guest house. He often visited his guest house whenever he feels stress in his work. He loves fishing and so on that day he went for fishing. Unfortunately his car key fell down into the lake. He kept the spare key in the guest house. We need to help him to find out the key and Escape From the Black House soon.