He was sitting on a bench in the park listening to the voices in his head.
He could hear them clearly. He was smiling, as though he was joining in to some strange conversation. People out to lunch, walking past, were staring at him, especially when he closed his eyes. He was in another world. The subtle changes in his expression ended with a knowing smile. Without warning he stood abruptly. He pulled the mini earpiece out as he made his way back to the office. That was the end of the story.
He just loved audio books.