“He’s killing me! He’s afraid I’ll tell!”
She had referred to Pinto, of course, for her previous words and looks, the Gray Phantom thought, had clearly shown that she suspected the policeman of having murdered her employer. It was a safe inference, then, that Pinto had slain the housekeeper in order to seal her lips forever, and the Phantom wondered whether the patrolman was not also responsible for the barricade at the end of the tunnel. It seemed plausible enough. Pinto must have known that there had been a witness to his deed, though he probably did not know that this witness had seen only a hand and a knife. It was even possible that the policeman had seen more of the Phantom than the Phantom had seen of him. At any rate, he was doubtless aware that the housekeeper’s words had been addressed to someone hidden in the opening back of the revolving frame. Fearing that this person would betray him, he had quickly slammed the frame into place, after which he had run around to Doctor Bimble’s cellar and blocked the mouth of the passage, intending that the witness to his crime should smother to death.
So much seemed clear; at least it furnished a hypothesis in the light of which the strange events of the night before were explainable. The only puzzling factor in the situation was the disappearance of the body. The Phantom, cudgel his wits as he might, could see no other solution than that the murderer must have removed it. No one else would have been likely to do so. If the body had been found by anyone else the matter would have been promptly reported to the police, and without doubt another crime would have been chalked up against the Gray Phantom. Scanning the mystery from every angle, the Phantom could see no other explanation than that the body had been concealed by the murderer.
“But why?” he asked himself. So far as he could see, the murderer could have had no reason for covering up the crime, which in the absence of contrary proof would have been imputed to the Gray Phantom. The police and the press would have jumped instantly to the conclusion that the arch-rogue had followed up the killing of Gage with the murder of the housekeeper, and their fertile brains could easily have invented several plausible motives. This, to all appearances, would have suited the murderer to perfection. Why, then, had he gone out of his way to keep the crime secret?
The Phantom’s mind churned the problem for several minutes before the answer came to him. As is often the case, it was so ludicrously simple that he wondered why he had not seen it at once.
“Clear as daylight!” he decided. “The murderer knew the crime couldn’t be fastened on me, because I had an alibi. I was in jail, so to speak, when the murder was committed. Of course, I was in jail only by proxy, the real prisoner being Tommie Granger, but the murderer didn’t know that until later. He thought I was locked up, and that was enough for him.”
The Phantom backed out of the room. His visit to the scene of the two murders had helped him to clarify certain problems, but he had accomplished nothing definite. His suspicions in regard to Pinto had become stronger, but as yet he had not a shred of actual proof against the man. He considered what his next step should be as he walked across the store and started up the stairs. For several reasons, he decided, he must have a talk with Thomas Granger at once.
He paused for an instant outside the housekeeper’s bedroom, then walked on to the next door, which opened into a kitchen. The third door, the one farthest down the hall, gave access to a large room, and the tall tiers of boxes and packing cases indicated that Gage had used it for storage purposes. Abstractedly he let the gleam of his electric flash glide over the floor and the long, jagged cracks in the begrimed ceiling. He was looking for nothing in particular, and apparently there was nothing to find.
Yet, as he started to walk out, something held him. He could not analyze the sensation at first, but it was one he had experienced before, and it was associated in his mind with dreadful and awe-inspiring things. He could not name it, but it gave him the impression that he stood in the presence of death.
He started forward, but of a sudden he checked himself and listened intently to sounds coming from the direction of the stairs. They were short, creaking, and irregular sounds, like those produced by a heavy man when he tries to walk lightly, and they gave the Phantom an impression of hesitancy and furtiveness.