Before Markovitch could ask further questions the room was emptied of them all. They tramped out, laughing and joking, children again, the hall door closed behind them.

Nina clutched Vera’s arm.

“Vera.... Vera, where is he?”

“I don’t know,” said Vera.

“What’s all this?” asked Nicholas.

They explained to him but he scarcely seemed to hear. He was radiant—smiling in a kind of ecstasy.

“They have gone? I am safe?”

In the doorway was the little policeman, black with grime and dust, so comical a figure that in reaction from the crisis of ten minutes before, they laughed hysterically.

“Oh look! look!...” cried Nina. “How dirty he is!”

“Where have you been?” asked Vera. “Why weren’t you in the cupboard?”