others to
their rooms, Bob and Mr. Temple sharing Mr. Hampton's room, and Frank
bunking in with Jack himself.

After Frank had undressed and tumbled into bed, so dog-tired, as he
said, that he could barely keep his eyes open to see the way to his
pillow, Jack went out to stand in the starlight on the porch. After
leaning against a pillar some minutes, during which his active brain
kept milling endlessly over the details of the past few days, he had
an impulse to go over to the radiophone station and talk to the guard,
an ex-cowboy, on duty there since the attack by three Mexicans at the
time this story opened.

Hands in his pockets, head bowed in thought, he moved across the hard
packed sand, his feet making practically no sound.

CHAPTER XII

JACK DISCOVERS A TRAITOR

Two figures stood at the door of the radio station power house. The
station was a duplicate of Mr. Hampton's other station on his Long
Island estate, earlier described. So engrossed were the two men in
whispered conversation that they were unaware of Jack's noiseless
approach.

The soft sibilant sound of whispering which came to his ears just as
he was about to approach the door roused Jack from his reflections.
His suspicions were on the alert because of the happenings of recent
days, and he halted. Certain, after standing a moment with every nerve
tensed, that he had not been seen, Jack backed cautiously until again
around the corner of the building.

Who were the two men? What were they whispering about? Pressing
against the side of the building, Jack thought quickly. One of the two
must be the night watchman. Perhaps the other was the man who kept
guard at the station by day. If he were, thought Jack, then, perhaps,
some new danger menaced and the night man had called the day man to
help him. This theory also would account for the fact that they were
whispering, instead of conversing in normal tones.

So probable did this supposition seem to Jack that he decided to join
the men and ask what the danger was. Caution, however, prompted him to
reconnoitre by peeping around the corner before stepping into the
open. The next moment he was thankful he had done so. For, as he
looked, one of the two struck a match and held it in cupped hands to a
cigarette, and Jack saw the man was Remedios.

Drawing his head back quickly, Jack leaned against the building,
trying to compose his thoughts. What was Remedios doing here? Not many
hours before