“This is twice that we have met,” he said. “So beware!”

The sinister voice made Harry shudder in spite of the fact that The Shadow was his friend.

“You were waiting for another man. You will find him outside — unless he finds you here first. He rapped, and you answered. But while you unbarred the door, I came from the darkness and overpowered him.

“He was sent here by Nick Savoli. You will take your instructions from him. Perhaps he will ask you what has happened to your prisoner. You will not know. You will never learn.

“I leave you now; and remember: I know your secret. I know who killed Larrigan’s men.

“One week from to-day, Nick Savoli will know, also. For I shall tell him!”

The Shadow stood like an accusing specter from the other world. The two killers quailed as they heard his dread words.

THE SHADOW approached the chair where Harry Vincent sat, and raised the young man’s head. He drew a vial from his cloak, and placed the small bottle against Harry’s lips.

The pungent liquid was unlike anything that Harry had ever tasted. It seemed to revive him, and give him sudden strength. His step was almost firm as The Shadow guided him to the door.

They went up the steps together, into total darkness. Harry could not see the strange figure that walked beside him. Only the firm, steadying grip enabled him to know that The Shadow was still there.