For the first installment of GBH’s Author Talk series, GBH Contributor Sue O’Connell chats with National Book Award winner Julia Glass about her new novel, “Vigil Harbor,” “where in a historic sailing town, a rash of divorces upends the local sense of complacency, and loyalties realign.” Glass is the best selling author of “Three Junes” and “I See You Everywhere,” and is a senior distinguished writer in residence at Emerson College.