Nico Walker is in jail for robbing banks.
He can use the pay phone for 15 minutes at a time, and then he has to wait a half-hour. It took a while to do an interview.
That's also sort of the way he wrote his debut novel, Cherry — on a typewriter, with a hundred-or-so other guys looking over his shoulder.
"It was something that I was doing when I was locked up," he says. "Something to pass the time. But I didn't — I wasn't planning to write a novel, you know, autobiographical or anything like that."