"Show him in."

The visitor entered, and Carroll found himself gazing into the level eyes
of a slightly disheveled and obviously excited young man of about
twenty-eight years of age. The man was slight of stature, but every
nervous gesture bespoke wiriness.

"Are you Mr. Carroll?"

"Yes."

"I'm Gresham--Garrison Gresham."

"A-a-ah! Won't you be seated!"

"Yes. I came to have a talk with you."

Carroll seated himself opposite his caller. Then he nodded.

"You came to see me?"

"About the Warren case."

"You know something about it?"

"Yes!" The young man seemed to bite the word. "I do."

"What?"