There was someone, a woman, standing there. Motionless. The nighttime darkness is never absolute. Given the city’s light pollution, I can always distinguish gradients of light, starting with the paler shades of gray and deepening to charcoal. If I wake during the night, this is what allows me to wander the studio without bothering to turn on lights.

It was Solana. In my house. In my loft, staring down at me while I slept. Fear spread through me slowly like ice. The cold moved out from my core all the way to the tips of my fingers and toes in the same way water gradually turns solid when a lake freezes over. How had she gotten in? I waited, wondering if the specter would resolve into an ordinary object-a jacket thrown over the railing, a garment bag hanging from the hinge on my closet door.

At first, my mind was blank with disbelief. There was no way-no way-she could have gained entry. Then I remembered Henry’s house key attached to a white cardboard tag with PITTS neatly printed on it by means of identification. Gus kept the key in his desk drawer, where I’d come upon it the first time I searched for Melanie’s phone number. Henry had told me there was a time when Gus had brought in the mail and watered the plants when Henry was out of town. Henry’s locks and mine were keyed the same, and when I thought about it, I couldn’t remember securing the burglar chain, which meant once she unlocked the door, there was nothing preventing her from coming in. What could be easier? I might just as well have left my front door ajar.

She must have sensed I was awake and looking at her. We stared at each other. There was no need for conversation. If she was armed with a weapon, this was the moment she’d strike, knowing I was aware of her, but powerless to fight. Instead, she moved away. I saw her turn toward the spiral stairs and disappear. I sat straight up in bed, my heart banging. I pushed the covers aside and reached for my running shoes, shoving my bare feet into them. The lighted clock face shone bright again, numbers flashing. It was 3:05. Solana must have found the breaker box. Now the power was on and I skittered down the stairs. My front door stood open and I could hear her unhurried footsteps receding along the walk. There was an insolence in the leisurely way she left. She had all the time in the world.

I closed the door, turned the thumb lock, slid on the chain, and hurried into the downstairs bathroom. Through the window I could see a squared-off view of the street. I pressed my forehead against the glass, checking in both directions. There was no sign of her. I expected to hear a car start, but the quiet was unbroken. I sank down on the rim of the tub and rubbed my face with my hands.

Now that she was gone, I was more afraid than I’d been when she was there.

In the dark of the bathroom, I closed my eyes and projected myself into her head, seeing the situation as she must view it. First the tarantula, now this. What was she up to? If she wanted me dead-which she did without doubt-why hadn’t she acted while she had the chance?

Because she wanted to demonstrate her power over me. She was telling me she could walk through walls, that it would never be safe for me to close my eyes. Wherever I went and whatever I did, I’d be vulnerable. At work, at home, I was at her mercy, alive purely at her whim, but possibly not for long. What were the other messages embedded in the first?

Starting with the obvious, she wasn’t in Mexico. She’d left the car near the border so we’d assume she’d fled. Instead, she’d doubled back. By what means? I hadn’t heard a car start, but she could have parked two blocks away and made the rest of the trip to and from my bedside on foot. The problem from her perspective was that buying or renting a car required personal identification. Peggy Klein had snatched her driver’s license and without that she was screwed. She couldn’t be certain her face, her name, and her various aliases hadn’t been burning up the wires. For all she knew, the minute she tried to use her phony credit cards, she’d announce her location and law enforcement would close in.

In the weeks she’d been gone, she probably hadn’t applied for work, which meant she was living on cash. Even if she found a way to bypass the issue of ID, buying or renting a car would eat up valuable resources. Once she killed me, she’d have to lie low, which meant she’d have to save her cash reserves to support herself until she found someone new to prey on. Those matters took patience and careful planning. She hadn’t had time enough to set up a new life. So how had she managed to get here?

By bus or by train. Traveling by bus was cheap and largely anonymous. Traveling by train would allow her to disembark a scant three blocks from where I lived.

First thing the next morning, I told Henry about my night visitor and my theory of how she’d gotten in. After that, I called a locksmith and had my locks changed. Henry and Gus had their locks changed as well. I also called Cheney and told him what had happened so he could put the word out on his end. I’d given him photographs of Solana so the officers on every shift would be familiar with her face.