“An interruption must then have ensued very close upon your departure, Mr. Harwell.”

A cold bluish pallor suddenly broke out upon the young man’s face. He started, and for a moment looked as if struck by some horrible thought. “That does not follow, sir,” he articulated with some difficulty. “Mr. Leavenworth might—” but suddenly stopped, as if too much distressed to proceed.

“Go on, Mr. Harwell, let us hear what you have to say.”

“There is nothing,” he returned faintly, as if battling with some strong emotion.

As he had not been answering a question, only volunteering an explanation, the coroner let it pass; but I saw more than one pair of eyes roll suspiciously from side to side, as if many there felt that some sort of clue had been offered them in this man’s emotion. The coroner, ignoring in his easy way both the emotion and the universal excitement it had produced, now proceeded to ask: “Do you know whether the key to the library was in its place when you left the room last night?”

“No, sir; I did not notice.”

“The presumption is, it was?”

“I suppose so.”

“At all events, the door was locked in the morning, and the key gone?”

“Yes, sir.”