Liv turned even paler. She whispered, “No one ever comes to visit me here. I hang out with friends out in town. I almost didn’t answer the door when you two knocked. That was a knock on the door, wasn’t it?” Grayson said in a low voice, “That’s what it sounded like.” This was followed by a louder, more persistent knock. “Liv, if you’re innocent of these murders, then you’re in danger, too,” I said. I knew if the crimes were connected to Alan Nelson’s death, and it wasn’t Liv or Donna . . . I had the feeling I knew who was at the door. Liv murmured, “Whoever it is has got to be stopped. This needs to be over. You two hide and record what happens.” She headed to the door, our pleas for her to stay back falling on deaf ears. Grayson grabbed a kitchen knife, and I pulled out a frying p