The door burst open from the study. In dashed Commissioner Weston, followed by Arthur Wilhelm and Doctor George Fredericks.

Cardona raised himself to see the face of Fredericks — the man whom Biscayne had named as his accomplice!

CHAPTER XXIV

THE LAST DEATH

To Doctor George Fredericks, the expression on Cardona’s face meant much. He had seen the detective stooping over the form of Roger Biscayne. Had the dying man confessed?

The physician stooped beside the helpless body.

Weston and Wilhelm stood back, supposing that he was giving aid and attention. But Fredericks had a different purpose. Too well did he know the true nature of Roger Biscayne.

“Damn you!” he whispered. “You tried to double-cross me. To kill me, eh? What have you told? Answer me! What have you told?”

None but the dying man heard the words. To Roger Biscayne, they brought an evil satisfaction.

His mind could not grasp these strange events that had thwarted his efforts to kill by gas and by bomb. But his eyes glared glassily as he realized the dilemma that had confronted his accomplice.