"What did you do then, since you say you did not go directly?"
"I walked about the streets."
"Why did you do this?"
"Partly for the exercise, and partly because I preferred not to reach the station until about time for my train to leave."
"And did your walking about the streets bring you anywhere near this locality?"
"That I refuse to answer."
"But you must answer, Mr. Leroy."
"Not if it incriminates myself."
"Then your refusal to answer is the same as affirmative. I shall assume that you were in this locality between eleven and twelve o'clock on Wednesday night."