"She's probably on her way up here," returned Craig briefly, taking up the blow-pipe again.

Alfonso remained silent. The Senora could scarcely hide her excitement. If there were anything in telepathy, I am sure that she read everything that was said over the wire.

Quickly Craig resumed his work, biting through the solid steel as if it had been mere pasteboard, the blow-pipe showering on each side a brilliant spray of sparks, a gaudy, pyrotechnic display.

Suddenly, with a quick motion, Kennedy turned off the acetylene and oxygen. The last bolt had been severed, the lock was useless. A gentle push of the hand, and he swung the once impregnable door on its delicately poised hinges as easily as if he had merely said, "Open sesame."

Craig reached in and pulled open a steel drawer directly in front of him.

There in the shadow lay the dagger—with its incalculably valuable secret, a poor, unattractive piece of metal, but with a fascination such as no other object, I had ever seen, possessed.

There was a sudden cry. The Senora had darted ahead, as if to clasp its handle and unloose the murderous blade that nestled in its three-sided sheath.

Before she could reach it, Kennedy had seized her hand in his iron grasp, while with the other he picked up the dagger.

They stood there gazing into each other's eyes.

Then the Senora burst into a hysterical laugh.