Hmmm. Dunno? 🙂 I hear them in my head. Until that happens, the story doesn’t take off. Once the characters start “talking,” I’m on a roll. Sometimes I hear a voice I hadn’t expected, and that changes the story. I had a villain in Dark Moon, for instance, suddenly appear, and I hadn’t known he/she was the killer! Same thing in No Surrender. I thought the evil-doer was one person–nope! Suddenly a different character–and I’m not going to say whom!–just started chatting away in my head!