"It wouldn't do 'em much good to make us stand and deliver," mused the young express rider. "For Mr. Argent said these letters weren't of prime importance. Still, I wouldn't like to have them taken away from me, or lose them, and get a bad reputation in this business. I don't want to lose my job just now, when dad is laid up."

Jack had feared that the two strangers who had fled in such a hurry from the hotel in Rainbow Ridge, might at least try to annoy him on the road, as they had taken the trail leading up the mountain to Golden Crossing.

But nothing like this happened, and in due time Jack arrived at the other post office and was greeted by Jennie. Jack gave Jennie the message about Mr. Argent's letters, but said nothing to her about having again seen the two men who had annoyed her.

"It would only worry her," he reflected, "and she has worries enough without my adding to them."

Jack remained that night in Golden Crossing, spending a pleasant evening with Aunt Matilda and Jennie. He was off early the next morning for the ride to Rainbow Ridge. Having delivered the mail, and before going to see his father, Jack made some inquiries around the Mansion Hotel about the two strangers who had left so suddenly.

No one knew much about them, except that they had ridden in early the previous morning, and had eaten a hasty breakfast It had been observed that they kept well to themselves, and conversed in low tones.

Then had come the episode of the listening on the part of one, and the flight of both of them. That was really all Jack could learn.

"And as long as you didn't see anything of them on the road," said Mr.
Argent, "I guess you needn't worry. You got my letters off all right?"

"Oh yes."

"Well, now the next thing will be the replies. Watch out for them."