The dead bolt on the front door clicked back with a dry, metallic snap that I had heard in my nightmares for twenty-one days straight. I was standing by the stove stirring a pot of thin chicken broth that my three-year-old daughter Chloe would inevitably push away with her small hand, her fever still humming under her skin like a little engine that wouldn’t quit. Upstairs, the baby gave a muffled, wet cough that made my spine tighten. I didn’t turn around right away. I let the silence stretch for a second, feeling the gray afternoon light cut across the linoleum, because I knew whose heavy tread was about to hit the oak floorboards in the hallway.