As he turned to start a search for stairs to the house above, he heard a sound to one side. He wheeled quickly; as he did, a light filled the room. Plunging upon him was a huge man. Vincent caught the glint of a knife — a machete. He saw a leering face, with a scarred cheek. He turned to escape the enemy, and swung his automatic toward him.

His wrist was seized before he could press the trigger. The pistol fell upon the floor. But though Harry lost his weapon, he managed to escape the thrust of the machete. Quick as a flash he caught the man's right wrist and prevented him from bringing the knife into play.

They struggled silently. The huge man with the ugly face was powerful, yet The Shadow's agent had the strength to resist him. As their arms locked and they stood straining yet almost motionless, Harry realized that he had been discovered in the dark, and that the man had pressed a light switch which illuminated this part of the cellar.

Harry's fierce opponent was a leering, scar-faced brute. Harry, faced by the man's dark visage, took the fellow for a Mexican; a logical guess since the man had first attacked with a machete. Harry battled madly; but he knew from the start that he was waging conflict with an enemy whose strength was far greater than his own.

* * *

The odds were in favor of the attacker. He had nearly caught Harry unaware; he intended to weaken his antagonist. Every second that went by postponed all effort to rescue the imprisoned Bruce Duncan.

Harry realized this. He made a sudden twist. Taking advantage of a slip on the part of his opponent, he eluded the man's grasp and was free. He dashed madly across the cellar toward the opening through which he had come. There he stopped in consternation.

The Mexican, in coming through the cellar, had evidently seen the dim light of the opened window. This part of the cellar was quite dark, away from the illumination farther back. Still, Harry could see that the grating had been closed and fastened.

There was only an instant to take in these facts. The lead that Harry had gained might have been sufficient for him to scramble through had the grating been open. Outside, he might have summoned help. Now, at bay, he turned to meet the onrush of the big man whose machete was raised above his head.

Harry grabbed the fellow's arm and locked in furious struggle. His only hope was to overpower the man now. He was fierce in his attack and he swung the huge Mexican around toward the wall near the grating.