The Russian nodded emphatically.

"Yes—there's danger. Too much is getting known about us—about this place. I know of several people who suspect." He added coldly: "They must be silenced."

Bundle felt a little cold shiver pass down her spine. If she were to be found, would she be silenced? She was recalled suddenly to attention by a word.

"So nothing has come to light about Chimneys?"

Mosgorovsky shook his head.

"Nothing."

Suddenly No. 5 leant forward.

"I agree with Anna; where is our president—No. 7? He who called us into being. Why do we never see him?"

"No. 7," said the Russian, "has his own ways of working."

"So you always say."