Mischievous Cats

Our cat is very good at getting into places that he should not be or places you would not expect him to be. He gets up on top of the china cupboard and walks across the top of door frames. He hides under the bed sheets and under the sofa covers. Give him a chance and out the door he goes and plays catch me if you can with us for about an hour, then strolls back into the house like nothing ever happened. I am always worried he will run into the street, because he is an indoor cat and has never been free outdoors enough to know to stay home.