“He shall have it at once,” she said in a low tone.

Quest watched her cross the room. She opened the door and passed out without a backward glance. Then he shrugged his shoulders, hesitated for a moment, and followed her. He heard the door of her apartment on the next floor close, however, and made his way to the laboratory. He entered the room softly and paused upon the threshold. His presence was altogether unobserved by the two people who were standing at the other end of the apartment.

“I say, Miss Laura,” the Inspector was saying, “this has got to come sometime or other. Why don’t you make up your mind to it? I’m no great hand at love-making, but I’m the right sort of man for you and I think you know it.”

“This,” Quest murmured to himself, “is where Laura boxes the Inspector’s ears!”

Nothing of the sort happened, however. There was a queer, a mystifying change in Laura’s expression. She was looking down at the floor. Suddenly her face was hidden in her hands. The Inspector threw his arms around her.

“That’s all the answer I want,” he declared.

Quest stole softly away. As he regained the door of his study, Lenora, dressed for the street, hurried out. She tried to pass him but he laid his hand upon her shoulder.

“I was just going round to Mr. French’s office,” she explained.

“That’s all right,” Quest replied. “The Inspector’s here. You can leave the note upon the table. Hi, Parkins,” he called out to his secretary in the next room, “get my hat and coat. Come back a moment, Lenora.”

She turned into the room a little unwillingly and leaned against the table. Quest stood by her side.