Reaching the street he accosted a man at the door with the question:
"Did you see a thin man with a black moustache, a high hat, and frock coat come out of here in a hurry a few moments ago?"
"Yes, sir. He got in a cab and rode away."
"Did you notice the sort of cab it was?"
"I did. Do you know Pork Chops, the negro hackman?"
"Oh, yes."
"Well, it was his rig."
"Which way did they go?"
"In the direction of the railroad depot."
Thanking his informant, the old detective hastened away convinced that the fugitive was going out of Niagara by rail.