"In the first place," I began, "do you remember the day the Washington Flier was wrecked below here?"
"Do I!" he said. "Did Jonah remember the whale?"
"Were you on the platform here when the first section passed?"
"I was."
"Do you recall seeing a man hanging to the platform of the last car?"
"There was no one hanging there when she passed here," he said with conviction. "I watched her out of sight."
"Did you see anything that morning of a man about my size, carrying a small grip, and wearing dark clothes and a derby hat?" I asked eagerly.
McKnight was trying to look unconcerned, but I was frankly anxious. It was clear that the man had jumped somewhere in the mile of track just beyond.
"Well, yes, I did." The agent cleared his throat. "When the smash came the operator at MX sent word along the wire, both ways. I got
