“In all of the attention focused on James Frey and his book “A Million Little Pieces” in recent weeks, two main characters in the drama — Mr. Frey’s literary agent and the book’s editor — have largely escaped scrutiny. But [this weekend,] a number of people in the publishing business suggested it was time for Kassie Evashevski, Mr. Frey’s agent, and Sean McDonald, who edited both A Million Little Pieces and Mr. Frey’s follow-up, My Friend Leonard, to talk about their roles in selling and shaping the books.”