"Yes, and keep our eyes and ears open every foot of the way. I've got a hunch that we'll find the key to this mystery somewhere between Ash Fork and Flagstaff. You go on up to the room, Carl, and go carefully. I'll sleep in the Red Flier. The car will be fairly comfortable for one, and it wouldn't be for two. Besides, it will be better if some one occupies our room."
Carl protested a little, but was finally prevailed upon to carry out Matt's suggestion. Matt got into the car and doubled up on the rear seat.
His mind was so full of the queer developments of the mystery that it was a long time before he went to sleep. However, he dozed off at last and did not open his eyes again until, in the early morning, he was aroused by the opening of the barn door.
As he started up quickly in the tonneau, the face of Tomlinson met him.
Tomlinson was startled by the sight of Matt, and leaped back in consternation; then, recovering himself, he came on into the barn and drew near the machine.
There was flaming suspicion in his eyes and a fierce look on his face.
[CHAPTER VIII.]
ON THE ROAD.
"What are you doing here?" demanded Tomlinson.