Benson's eyes narrowed.

"Then you have found the ringleader at last, have you?" he asked.

"I am sorry to say that there doesn't seem to be any doubt of Hallock's guilt. The arrest will be made quietly. Judson understands that. There is another man that we've got to have, and there is no time just now to go after him."

"Who is the other man?" asked Benson.

"It is Flemister; the man who has the stolen switching-engine boxed up in a power-house built out of planks sawed from your Gloria bridge-timbers."

"I told you so!" exclaimed the young engineer. "By Jove! I'll never forgive you if you don't send him to the rock-pile for that, Lidgerwood!"

"I have promised to hang him," said the superintendent soberly—"him and the man who has been working with him."

"And that's Rankin Hallock!" cut in the trainmaster vindictively, and his scowl was grotesquely hideous. "Can you hang them, Mr. Lidgerwood?"

"Yes. Flemister, and a man whom Judson has identified as Hallock, were the two who ditched 204 at Silver Switch last night. The charge in Judson's warrant reads,'train-wrecking and murder.'"

The trainmaster smote the desk with his fist.