We burst into the hall, where Burke stood with both his hands raised dazedly to his head. I could hear the sound of running feet upon the gravel, and knew that Carter was coming to join us.

Burke, a heavy man with a lowering, bull-dog type of face, collapsed onto his knees beside Slattin, and began softly to laugh in little rising peals.

"Drop that!" snapped Smith, and grasping him by the shoulders, he sent him spinning along the hallway, where he sank upon the bottom step of the stairs, to sit with his outstretched fingers extended before his face, and peering at us grotesquely through the crevices.

There were rustlings and subdued cries from the upper part of the house. Carter came in out of the darkness, carefully stepping over the rec.u.mbent figure; and the three of us stood there in the lighted hall looking down at Slattin.

"Help us to move him back," directed Smith, tensely; "far enough to close the door."

Between us we accomplished this, and Carter fastened the door. We were alone with the shadow of Fu-Manchu's vengeance; for as I knelt beside the body on the floor, a look and a touch sufficed to tell me that this was but clay from which the spirit had fled!

Smith met my glance as I raised my head, and his teeth came together with a loud snap; the jaw muscles stood out prominently beneath the dark skin; and his face was grimly set in that odd, half-despairful expression which I knew so well but which boded so ill for whomsoever occasioned it.

"Dead, Petrie!--already?"

"Lightning could have done the work no better. Can I turn him over?"

Smith nodded.

Together we stooped and rolled the heavy body on its back. A flood of whispers came sibilantly from the stairway. Smith spun around rapidly, and glared upon the group of half-dressed servants.

"Return to your rooms!" he rapped, imperiously; "let no one come into the hall without my orders."

The masterful voice had its usual result; there was a hurried retreat to the upper landing. Burke, shaking like a man with an ague, sat on the lower step, pathetically drumming his palms upon his uplifted knees.

"I warned him, I warned him!" he mumbled monotonously, "I warned him, oh, I warned him!"

"Stand up!" shouted Smith--"stand up and come here!"

The man, with his frightened eyes turning to right and left, and seeming to search for something in the shadows about him, advanced obediently.

"Have you a flask?" demanded Smith of Carter.

The detective silently administered to Burke a stiff restorative.

"Now," continued Smith, "you, Petrie, will want to examine him, I suppose?" He pointed to the body. "And in the meantime I have some questions to put to you, my man."

He clapped his hand upon Burke's shoulder.

"My G.o.d!" Burke broke out, "I was ten yards from him when it happened!"

"No one is accusing you," said Smith, less harshly; "but since you were the only witness, it is by your aid that we hope to clear the matter up."

Exerting a gigantic effort to regain control of himself, Burke nodded, watching my friend with a childlike eagerness. During the ensuing conversation, I examined Slattin for marks of violence; and of what I found, more anon.

"In the first place," said Smith, "you say that you warned him. When did you warn him and of what?"

"I warned him, sir, that it would come to this--"

"That what would come to this?"'

"His dealings with the Chinaman!"

"He had dealings with Chinamen?"

"He accidentally met a Chinaman at an East End gaming-house, a man he had known in Frisco--a man called Singapore Charlie--"

"What! Singapore Charlie!"

"Yes, sir, the same man that had a dope-shop, two years ago, down Ratcliffe way--"

"There was a fire--"

"But Singapore Charlie escaped, sir."

"And he is one of the gang?"

"He is one of what we used to call in New York, the Seven Group."

Smith began to tug at the lobe of his left ear, reflectively, as I saw out of the corner of my eye.

"The Seven Group!" he mused. "That is significant. I always suspected that Dr. Fu-Manchu and the notorious Seven Group were one and the same.

Go on, Burke."

"Well, sir," the man continued, more calmly, "the lieutenant--"

"The lieutenant!" began Smith; then: "Oh! of course; Slattin used to be a police lieutenant!"

"Well, sir, he--Mr. Slattin--had a sort of hold on this Singapore Charlie, and two years ago, when he first met him, he thought that with his aid he was going to pull off the biggest thing of his life--"

"Forestall me, in fact?"

"Yes, sir; but you got in first, with the big raid and spoiled it."

Smith nodded grimly, glancing at the Scotland Yard man, who returned his nod with equal grimness.

"A couple of months ago," resumed Burke, "he met Charlie again down East, and the Chinaman introduced him to a girl--some sort of an Egyptian girl."

"Go on!" snapped Smith--"I know her."

"He saw her a good many times--and she came here once or twice. She made out that she and Singapore Charlie were prepared to give away the boss of the Yellow gang--"

"For a price, of course?"

"I suppose so," said Burke; "but I don't know. I only know that I warned him."

"H'm!" muttered Smith. "And now, what took place to-night?"