“You’ve sung your last tune, Mr. Phantom,” he muttered. “There’s always a way to handle the likes of you.”

As he spoke, he quickly shifted his hold on the pistol, and in another moment the handle crashed down on the prisoner’s head. Of a sudden the Phantom felt himself grow limp. A laugh broke hoarsely through the gloom that descended upon him. He heard a voice, but it sounded faint and remote, as if coming to him across a vast chasm.

“Guess you won’t get out of that!

Then, miles away, a door slammed. He exerted a supreme effort to shake off the numbness brought on by the unexpected blow. His eyes fluttered open. His mind struggled out of the blinding haze. The light was still on, and his staring eyes flitted slowly about the room. It seemed only a moment ago that the door had slammed. Pinto was nowhere in sight, and for a moment he wondered at this.

Then, his mind clearing, it came to him that the policeman had gone out to summon assistance. He had had his lesson, and this time he was taking no chances with so dangerous and elusive a prisoner as the Gray Phantom. Doubtless he would be back in a few moments, and then——

He raised himself to a sitting posture. A hideous recollection electrified his body and mind. Helen Hardwick was missing, Pinto had said. Perhaps she was in trouble; perhaps some desperate danger confronted her. He must find her at once, and he must get out of the room before Pinto returned with reënforcements.

He tried to rise, but something restrained him. It was the steel link around his wrist. Only a moment ago, so it seemed, the other link had been fastened to Pinto’s hand. Now——

A groan of horror broke from his lips as he saw the thing to which he was linked by a band of steel. Pinto had, indeed, taken no chances. Even if the Phantom could get out of the room, his hand would be chained to the cold, dead hand of the housekeeper.

CHAPTER XVII—THE DUKE’S MESSENGER

In vain the Phantom spurred his wits to find a way out, but the thought that hurt him most was that he was helpless at a moment when Helen Hardwick might be in danger.