"Just walking, Mr. Mead?"
"Yes."
"But you haven't explained for what purpose."
"I explained; for air, and to see, and just to walk."
"Have you done this often?"
"Every night for years."
The police car sat in the center of the street with its radio throat faintly humming.
"Well, Mr. Mead," it said.
"Is that all?" he asked politely.
"Yes," said the voice. "Here." There was a sigh, a pop. The back door of the police car sprang wide. "Get in.”
"Wait a minute, I haven't done anything!"
"Get in."