Glass’s new novel, “The Traitor,” is a case in point. Emma Makepeace’s investigation — and, yes, her self-invented last name is a bit on the nose — leads her to work undercover as a ...

Q: Why did you write this book? A: Number one ... that made him go from our best battlefield general to our biggest traitor? That’s why I created Gideon Wheatley, a character who gets to ...