"How do you——?"

"He didn't die when you thought he did, Mrs. Bergen—but later. I can't tell you how. It's only a guess. But I'm beginning to see a light in this affair—and I'm going to follow it until I find the truth. Good-by. Don't worry."

And Peter, with a last pat on the woman's shoulder and an encouraging smile, went out of the door and into the house.

Eagerly Peter's imagination was trying to fill the gap in Jim Coast's story, and his mind, now intent upon the solution of the mystery, groped before him up the stair. And what it saw was the burning Gila Desert ... the mine among the rocks—"lousy" with outcroppings of ore ... "Mike" McGuire and "Hawk" Kennedy, devious in their ways, partners in a vile conspiracy....

But Peter's demeanor was careless when Stryker admitted him to McGuire's room and his greeting in reply to McGuire's was casual enough to put his employer off his guard. After a moment's hesitation McGuire sent the valet out and went himself and closed and locked the door. Peter refused his cigar, lighting one of his own cigarettes, and sank into the chair his host indicated. After the first words Peter knew that his surmise had been correct and that his employer meant to deny all share in the shooting of the night before.

"Well," began the old man, with a glance at the door, "what did he say?"

Peter shook his head judicially. He had already decided on the direction which this conversation must take.

"No. It won't do, Mr. McGuire," he said calmly.

"What do you mean?"

"Merely that before we talk of what Hawk Kennedy said to me, we'll discuss your reasons for unnecessarily putting my life in danger——"