He whispered her instructions:

“Meet me behind the Lycée Janson.”

She joined him in an unfrequented street:

“And suppose I’m followed?” she said.

“No,” he declared. “I looked carefully. Listen to me. Where did you find the stopper?”

“In the drawer of the table by his bed.”

“But we had felt there already.”

“Yes; and I did so again this morning. I expect he put it there last night.”

“And I expect he’ll want to take it from there again,” said Lupin.

“Very likely.”