That left the loft.

She thought she heard a footstep creak upstairs.

Run, a part of her brain—the intelligent part of her brain—was telling her. Get out of here now. But she gripped the knife tighter and headed through the kitchen, through the living room, to the stairway. It was day, but the loft’s small lone window was not able to illuminate the entire room, and the top of the stairs was in shadow.

She crept upward as quietly as possible, fingers white on the knife handle. She was almost to the top of the stairs and was bending over to keep her head below the level of the floor so he would not be able to see her approach, when her foot landed on a loose board. The stair groaned. She froze, not daring to breathe, but there was no sound from the loft. Holding the knife before her, she dashed up the last five steps, ready to lash out.

The loft was deserted. There was no one there.

Still holding the knife, she made a quick check of the closet, of the area behind Billy’s bed, but the loft was empty.

He had gone.

The house was clean.

She made her way downstairs. In the living room, she peered out the window, trying to spot any unnatural objects in the drive or in the surrounding trees and bushes, but the property was disturbed only by a pair of battling blue jays. She double-checked first the front door, then the back, and when she found that both were locked, she allowed herself to relax a little.

Her bladder had been considerably weakened by the tension, and she walked into the bathroom, still clutching the knife. She no longer had a death grip on the handle, but she was taking no chances—she might have missed him in her cursory examination of the forest in back. He could have been hiding behind a tree, knowing she would not go out of the house to search for him, and he might be waiting outside right now, listening in at the door, waiting for precisely a moment like this, a moment when she was vulnerable, to come inside and attack.

She left the bathroom door open and quickly pulled down her pants, sitting on the toilet.

The mailman stepped out of the shower.

She screamed in terror, dropping the knife, then immediately reached down with scrambling fingers to pick it up off the floor. He stepped on top of it, his shiny black shoes completely covering the blade. He was fully dressed, wearing his pressed postal uniform, but she could see the huge bulge in his trousers as he stood in front of her. She covered her exposed lap with one hand and held the other tremblingly in front of her to push him away.