“Why, don’t you see? That proves that one of them is at home. If they were all out, they would have locked the door from the outside with the key and not with the hook from inside. There, do you hear how the hook is clanking? To fasten the hook on the inside they must be at home, don’t you see. So there they are sitting inside and don’t open the door!”

“Well! And so they must be!” cried Koch, astonished. “What are they about in there?” And he began furiously shaking the door.

“Stay!” cried the young man again. “Don’t pull at it! There must be something wrong... Here, you’ve been ringing and pulling at the door and still they don’t open! So either they’ve both fainted or...”