Rikki-tikki listened. The house was as still as still, but he thought he could just catch the faintest scratch-scratch in the world,—a noise as faint as that of a wasp walking on a window-pane,—the dry scratch of a snake's scales on brickwork.
"That's Nag or Nagaina," he said to himself; "and he is crawling into the bath-room sluice. You're right, Chuchundra; I should have talked to Chua."
He stole off to Teddy's bath-room, but there was nothing there, and then to Teddy's mother's bath-room. At the bottom of the smooth plaster wall there was a brick pulled out to make a sluice for the bath-water, and as Rikki-tikki stole in by the masonry curb where the bath is put, he heard Nag and Nagaina whispering together outside in the moonlight.
"When the house is emptied of people," said Nagaina to her husband, "he will have to go away, and then the garden will be our own again. Go in quietly, and remember that the big man who killed Karait is the first one to bite. Then come out and tell me, and we will hunt for Rikki-tikki together."
"But are you sure that there is anything to be gained by killing the people?" said Nag.
"Everything. When there were no people in
