of a certainty he will live. It is fortunate that you were not
very far away when the accident occurred." And only then did Harkness
catch Diana's eyes in an exchange of glances where unbearable relief
was tempered with amusement.

* * * * *

The great hospital had its own landing stages on its broad roof. Their
ship was anchored there, an object to excite the curiosity of a
gathering throng.

"Not a healthy place for me, here in Vienna," Harkness remarked. He
was lifting the ship from its anchorage, its errand of mercy done.

"Now where?" he pondered aloud. The strain of the flight was telling
on him.

The girl recognized the strained look in his eyes, the deep lines that
their experiences had etched upon his face. Gently she drew his hand
from the controls.

"I will take it," she said. "Trust me. Lie down and rest."

Harkness had witnessed an example of her flying skill; she could
handle the ship, he knew. And he threw himself upon a cot in the cabin
to sink under the weight of overpowering fatigue.

He felt the soft shock of their landing. Diane was calling him, her
hand extended to lead him from the open port. But he was wrenched
sharply from the lethargy that held him at sight of his surroundings,
and the memories they recalled.

They were in a park, and their ship rested upon a spacious lawn.
Beyond were trees where a ship had shot crashingly through
storm-tossed limbs. And, before him, a chateau, where a window had
framed the picture of a girl with outstretched arms.

"Trust me," Diane had said. And he did trust her. But did she not know
what this meant? She was delivering him into the enemy's hands. He
should have kept himself from sight until he had rallied his
forces.... He was stammering words of protest as she led him toward
the door. Armed guards were already between him and the ship.

* * * * *

In a dark-panelled room Herr Schwartzmann was waiting. His gasp of
amazement as he sprang to his feet reflected the utter astonishment
written upon his face, until that look gave place to one of
satisfaction.

"Mademoiselle," he exclaimed, "--my dear Mademoiselle Diane! We had
given you up for lost. I thought--I thought--"

"Yes," said Diane quietly, "I believe that I can well imagine what you
thought."

"Ah!" said Herr Schwartzmann, and the look of satisfaction deepened.
"I see that you understand now; you will be with us in this mat