grinned as he stepped back a pace
or two, apparently satisfied.

From the next room there came the sound of footsteps and again Matin
shrank back against the wall. Directly the footsteps moved away and Matin
drew a breath of relief.

From his pocket now he produced a knife, examined it carefully and
grinned again. Looking carefully about to make sure that there was no one
in the room to observe him, he stepped forward.

Had he turned his head at that moment he would have seen a second figure
lowering itself just inside the room. But so intent was Matin upon the
dark deed ahead of him that, after his one observation of the room, he
did not look again.

The second figure was creeping after Matin now. He was not far behind,
but still he was not close enough to touch the first intruder. Matin took
two quick steps forward and raised his arm. Then he bent on one knee.

The arm flashed down!

CHAPTER XII

THE BATTLE OF THIAUMONT FARM

But the knife never reached its mark.

There came a sudden loud report, a flash of flame and the knife clattered
to the floor. Matin reeled and fell backward, and as he did so the second
intruder pounced upon him and pinned him down.

Hal arose to his feet slowly. In his hand he held a smoking revolver.
Chester, awakened by the shot, leaped quickly to his feet and his
revolver flashed in his hand.

"What's happened?" he exclaimed.

"My friend Matin here tried to do for me," said Hal, pointing. "I
shot him."

Chester rushed to the side of the two figures across the room. Then, for
the first time, the identity of the second figure was established. It was
Jules Clemenceau.

Hal also approached and bent over. He took Jules by the arm.

"What are you doing here?" he demanded.

"I followed Matin," replied Jules, rising to his feet. "I saw you when
you entered the trench from the German lines. After you had gone I
heard Matin threaten to kill you. We were relieved at the same time,
and suspecting that he might be up to some mischief, I followed him. I
was too far behind to do any good. I was so frightened that I could
not cry out."

"How did you happen to see him, Hal?" asked Chester.

"I don't know," was Hal's reply. "I was awakened just as Jules here came
through the window. I was about to call out when I saw Matin coming
toward me with drawn knife. I drew my revolver quietly and waited. I
wanted him to get close enough so I would not miss. My arm was doubled
under me