The siren cut out, and the wall faded instantly to black.

The walls faded away, and it seemed he was in some kind of cathedral.

Behind the car the white concrete walls of the commune faded and were lost in the distance.

The walls faded, and she was somewhere else.

The walls of the room faded to gray, then darkened and began to close in, forming a tunnel around him.

Slowly the walls of the chamber faded, and the castle hall reappeared.

Yet he could not help jumping when the walls of the machine faded and the beautifully designed interior lay open before his eyes.

The wall faded rapidly, leaving Lacuna staring at the place where the next stone had been about to appear.

The walls faded again, and we saw that the land below had brightened up.

The walls of the small chamber faded away as his tormentor began to take on a new reality.