"Be careful!"

"You can't scare me into telling a lie," said the prisoner, with an assumption of bravado that he did not feel. "I don't know anything about the express robbers, only what I've told you; you can make the most of that."

"I mean to do so," assured Dyke Darrel. "I shall not leave the trail until the perpetrators of that crime are secured and punished. In that day you may wish that you had not been so obstinate."

"I have told all I know."

"I hope you have!"

"You believe I am lying, Dyke Darrel?"

"It doesn't matter what I believe," retorted the detective. "Of course, you are not of the sort who believe in telling facts when a falsehood will serve you better. I did not expect anything different."

Arrived at the Southwestern metropolis, Dyke Darrel turned his prisoner over to the proper officers, warning them of the dangerous nature of young Skidway, and then he turned his thoughts and feet in another channel.

Dyke Darrel went to the office of the railroad company on whose road the midnight crime had been committed, and consulted with one of the officers in regard to the same.

"It is a terrible affair," said Mr. Holden, the officer in question. "I telegraphed our folks in Chicago to employ detectives in that city, and expect to have the best talent in the country look into this."