His lieutenant also exclaimed aloud.

"What are you doing here?" demanded the Apache chief sternly.

"I just wanted to see where you lived," replied Hal quietly.

"Why?"

"Well, there has been so much talk about you, your being a gentleman, and
all that, that I wanted to satisfy my curiosity."

"Well, your curiosity is satisfied. What now?"

"Nothing," said Hal briefly.

"I suppose you know," said Duval, "that now you have seen me without my
mask you will never leave this house alive."

"I suppose that is your idea," said Hal.

"You'll find that I have the right idea."

"Tell us your real object in coming here," said Duval's lieutenant.

"I have told you," replied Hal.

"That," said the lieutenant, "is a lie. It's too absurd. I guess I'll
search you."

He proceeded to do so while Duval kept Hal covered. There was not much to
be found--but one thing that Hal feared he would discover and which he
realized he should have dropped with the revolvers under the bed.

His searcher found it, drew it forth, and, with an exclamation of
triumph, held it up for Duval to see.

It was the police whistle General Gallieni had given him.

"So!" he exclaimed. "A police spy, eh! I thought so."

Hal shrugged his shoulders.

"Well, you have me," he said. "What are you going to do with me?"

The two men laughed.

"I guess you won't be as much surprised at what we are going to do as the
manner in which we are going to do it," replied Duval, with an evil leer.

"How?" asked his lieutenant. "Water?"

"Right," was his chief's reply. He turned to Hal. "This house," he
explained, "is on the very bank of the River Seine. Perhaps you have
skirmished about in the rear?"

Hal shook his head negatively.

"Well, such is the case. In the cellar is a neat little room of four
solid walls--no windows. There is a slight crack at the bottom, and
through this, by a contrivance of my own, I can let in the waters of
the river. The door is solid, and, once locked in, you cannot get
out. I believe that this is a fitting death for a police spy. What do
you think?"

Again Hal shrugged his shoulders.

"One way is as good as another," he said briefly. Duval turned to his
companion with a laugh.

"Quite a brave man we have here, eh?"

"Quite," returned the other. "However, I guess he'll change his tune when
the water gets up to his neck."

"Right you are," was the reply. "But what do you say? Shall he not sup
with us first?"