r this, for American soldiers are going to
die fast! The money you'll find will take care of you. Yes?"

"Yes!" nodded Mock. "Sure!"

Then, suddenly, Mock turned and whistled.

"You two men will throw up your hands!" came in the sharp tones
of Captain Dick Prescott, as he, Sergeant Kelly and four privates
stepped into view.

"You sneak!" yelled the stoop-shouldered one, making a rush at
Mock and trying to seize the vial. But Mock dodged. In the same
instant the bespectacled German tried to snatch the other vial
away from Wilhelm, but that soldier, too, dodged and saved the
vial.

"On the ground is a good place for you!" growled Sergeant Kelly,
knocking the stoop-shouldered stranger flat. Then, before the
fellow could rise Kelly had snapped handcuffs his wrists.

Two of the soldiers seized the bespectacled German just as he
started to run. He, too, felt the clasp of steel around his wrists.
Though Kelly and the four privates were armed with automatic
pistols no weapon had been drawn.

"Twice you've played the sneak, you!" hissed the stoop-shouldered
one, glaring at Private Mock.

"Twice more I'll do it to help Uncle Sam," retorted Mock, with
a short laugh. "I owed it to you to see you caught!"

"But you're a German!" hissed the bespectacled one at Wilhelm.
"Why did you turn on us, who are also German?"

"My father was a German; he's an American now," said Wilhelm,
coolly. "Me, I've always been an American, and I'm one now, and
will be as long as I live."

"Let me have those vials," Dick ordered. "Sergeant, take these,
and mark them as soon as you get back to company office. Then
we'll turn them over to the medical department. Sergeant, march
your prisoners."

Heading toward the road Sergeant Kelly and his four soldiers led
the German captives away.

Captain Dick, with Mock and Wilhelm, followed, but did not attempt
to keep up with the sergeant's party,

When Kelly showed up in camp again he did not have his prisoners
with him. He had taken them elsewhere, and they were soon on
their way to an internment camp, where, like "good" Germans in
America, they would live until the close of the war, cut off from
all further chance to plot against Uncle Sam's soldiers.

Halting at a farm-house on the way, Dick telephoned to regimental
headquarters. Two minutes after his message had been received
Private Brown, white-faced and haggard, was placed under arrest.
Under grilling, he confessed what Se