He stood and gazed and could not believe his eyes: the door, the outer door from the stairs, at which he had not long before waited and rung, was standing unfastened and at least six inches open. No lock, no bolt, all the time, all that time! The old woman had not shut it after him perhaps as a precaution. But, good God! Why, he had seen Lizaveta afterwards! And how could he, how could he have failed to reflect that she must have come in somehow! She could not have come through the wall!