They simply vanished through some chemical action of their own.

He moved away down the long gallery and vanished through the door.

The gun vanished through the small opening in the wall.

He turned and once again vanished through the wall of the tower.

The serving girl vanished through the door to the kitchen.

Then she vanished through a door and he turned to follow his guide.

The others had vanished through the hole in the roof.

Luis vanished through the only door leading into the house.

The big man vanished through the door in the direction of the shower.

"Up front on the right, in the rack," said the small man, and vanished through his door again.