And that figure was Death, whether living masquerader or Indian ghost. In any event, the shutters would protect him from a shot from the dark, and to get at him his enemies would have to come into the lighted room where he would have an even chance—which was all the big detective had ever asked.
To get his mind off the ghoulish red eyes glaring at him from the floor, Harrison brought out the object he had found lying near the broken lantern, where the slayer must have dropped it.
It was a smooth oval of flint, made fast to a handle with rawhide thongs —the Indian tomahawk of an elder generation. And Harrison's eyes narrowed suddenly; there was blood on the flint, and some of it was his own. But on the other point of the oval there was more blood, dark and crusted, with strands of hair lighter than his, clinging to the clotted point.
Joash Sullivan's blood? No. The old man had been knifed. But someone else had died that night. The darkness had hidden another grim deed...
Black shadows were stealing across the floor. The rats were coming back —ghoulish shapes, creeping from their holes, converging on the heap of rags in the far corner—a tattered carpet, Harrison now saw, rolled in a long compact heap. Why should the rats leap upon that rag? Why should they race up and down along it, squealing and biting at the fabric?
There was something hideously suggestive about its contour—a shape that grew more definite and ghastly as he looked.
The rats scattered, squeaking, as Harrison sprang across the room. He tore away the carpet—and looked down on the corpse of Peter Wilkinson.
The back of the head had been crushed. The white face was twisted in a leer of awful terror.
For an instant Harrison's brain reeled with the ghastly possibilities his discovery summoned up. Then he took a firm grasp on himself, fought off the whispering potency of the dark, howling night, the thrashing wet black woods and the abysmal aura of the ancient hills, and recognized the only sane solution of the riddle.
Somberly he looked down on the dead man. Peter Wilkinson's fright had been genuine, after all. In his blind panic he had reverted to the habits of his boyhood and fled toward his old home—and met death instead of security.
Harrison started convulsively as a weird sound smote his ears above the roar of the storm—the wailing horror of an Indian war-whoop. The killer was upon him!
Harrison sprang to a shuttered window, peered through a crack, waiting for a flash of lightning. When it came he fired through the window at a feathered head he saw peering around a tree close to the car.
In the darkness that followed the flash he crouched, waiting—there came another white glare—he grunted explosively but did not fire. The head was still there, and he got a better look at it. The lightning shone weirdly white upon it.
It was John Wilkinson's fleshless skull, clad in a feathered headdress and bound in place—and it was the bait of a trap.
Harrison wheeled and sprang toward the lantern on the table. That grisly ruse had been to draw his attention to the front of the house while the killer slunk upon him through the rear of the building! The rats squealed and scattered. Even as Harrison whirled an inner door began to open. He smashed a heavy slug through the panels, heard a groan and the sound of a falling body, and then, just as he reached a hand to extinguish the lantern, the world crashed over his head.
A blinding burst of lightning, a deafening clap of thunder, and the ancient house staggered from gables to foundations! Blue fire crackled from the ceiling and ran down the walls and over the floor. One livid tongue just flicked the detective's shin in passing.
It was like the impact of a sledgehammer. There was in instant of blindness and numb agony, and Harrison found himself sprawling, half-stunned on the floor. The lantern lay extinguished beside the overturned table, but the room was filled with a lurid light.
He realized that a bolt of lightning had struck the house, and that the upper story was ablaze. He hauled himself to his feet, looking for his gun. It lay halfway across the room, and as he started toward it, the bullet-split door swung open. Harrison stopped dead in his tracks.
Through the door limped a man naked but for a loin-cloth and moccasins on his feet. A revolver in his hand menaced the detective. Blood oozing from a wound in his thigh mingled with the paint with which he had smeared himself.
"So it was you who wanted to be the oil millionaire, Richard!" said Harrison.
The other laughed savagely. "Aye, and I will be! And no cursed brothers to share with—brothers I always hated, damn them! Don't move! You nearly got me when you shot through the door. I'm taking no chances with you! Before I send you to Hell, I'll tell you everything.