“I understand,” he said without a tremor in his voice, “that you found the room dark upon breaking in. Couldn’t the murderer have slipped out while you were looking for the light switch?”

“Huh!” The contemptuous snort came from Mrs. Trippe, who, with arms crossed over her chest, stood in the rear of the room. “How could he, I’d like to know, with me standing right outside the door and a crowd of rubbernecks at the main entrance?”

The Phantom seemed to ponder. The theory he had just suggested did not seem at all plausible, and his only purpose in mentioning it had been to turn Pinto’s thoughts in a new direction.

“I’d swear the rascal wasn’t in the room when I broke in,” declared the patrolman with emphasis.

“And he couldn’t have got out before,” remarked the Phantom, with a grin. At the same moment he felt Mrs. Trippe’s eyes on his face. She was gazing at him as if his last remark had made a profound impression upon her. He sensed a new and baffling quality in the situation, something that just eluded his mental grasp, and he began to wonder whether the housekeeper did not know or suspect something which she had not yet told.

“The Phantom’s a devil,” observed Pinto, again slanting a queer glance at the other man. “Nobody of flesh and bone could pull off a stunt like this. Maybe some day he’ll tell us how he did it. He’ll be roped in before long. Say,” with a forced laugh, “wouldn’t it be funny if he should get caught right here, in this room? They say a murderer always comes back to the scene of his crime.”

All the Phantom’s self-control was required to repress a start. Pinto’s remark, though uttered in bantering tones, was entirely too pointed to have been casual, and the gleam in his eyes testified that his suspicions were aroused.

“I think the Phantom’s talents have been grossly overestimated. When he is caught we shall probably find that he is quite an ordinary mortal. Don’t you think so, Mrs. Trippe?”

The woman started, then mumbled something unintelligible under her breath.

“Well, maybe,” said Pinto. “I’ve got a feeling in my elbow that says he’ll be caught before night, and then we’ll see. He may be an ordinary mortal, but I’ll be mighty interested to know how he got out of this room. Got any ideas on the subject, Mr. Adair?”