Driving up Old Reservoir Road in the gathering dark, I could feel myself in a state of suspended animation. The only sign of agitation was that I was taking the curves a little too fast for the current road conditions, which were wet, wet, wet. I had an idea, an intuition to verify before I called Jonah Robb. I turned left on the road that angled up beside her property and pulled into the parking area behind the house.

I went around to the front door and rang the bell. She took her sweet time coming to the door. I stared off at Brunswick Lake. In the waning light, the surface was as silvery as mercury. It had been eleven days since I first stood in this spot, looking out at the same sweeping views. The steep sloping lot was now a fairyland of knee-high weeds: fox tails, wild oats, and rye bending in the passing breeze. With much more rain, the now-softened hillside would slide down into the road.

The door opened behind me. Even baby-sitting for her grandchildren, Fiona was decked out in a black wool suit with big shoulder pads and a pinched-in waist. The lapels and jacket cuffs were done in a faux leopard print. She had her hair concealed in a matching leopard print turban. Gloria Swanson had nothing on her. I held out the envelope. "I included an invoice for your records. I hope you don't mind signing for the cash."

"Of course not. Won't you come in?"

I stepped into the foyer. There was a tricycle in the hall and the floor was covered with the same sort of kiddie detritus I'd seen at Blanche's house: Tinkertoys, blocks, a sock, broken crackers, crayons. The kids had built an enormous tent with the painter's drop cloths, which were now draped over all the chairs in the living room. I could see them bumping around in there, erupting in the sort of harsh, artificial giggles that signal the prelude to a big stinking fight.

Fiona scribbled her signature on the receipt. Her fingernails were dark red. She wore the same shade on her lips. She had a smudge of lipstick on the surface of her two front teeth. The effect was odd, like a virulent attack of bleeding gums. I tore off the top copy and handed it back to her.

"How's Blanche doing?"

"She's fine. At least she's had peace and quiet for the afternoon. Andrew's picking the kids up after supper tonight . . . assuming we live that long."

"Mind if I use the bathroom?"

"There's one off the kitchen. You can help yourself."

"Be right back," I said.

Fiona returned to the living room and I could hear her issuing orders about the cleanup. The kids even seemed inclined to cooperate.

I walked through the kitchen and unlocked the door leading into the three-car garage. It was dark outside and the yawning space was gloomy. There was a BMW parked in the nearest space, but the other two were empty. She'd told me when Dow came to visit, she made him pull into the garage each time so the local tongues wouldn't wag. I flipped on the overhead light, which didn't help that much.

I took the flashlight from my shoulder bag and crossed to the far wall. I imagined myself sitting in Dow's silver Mercedes. I looked to my left and calculated the trajectory of a bullet fired from the front seat through the driver's head, through the car window, and into the wall. Right about there, I thought. I'd have bet money she never bothered to pry the bullet out of the dry wall. She'd had enough white paint on hand to cover any evidence of what she'd done. Who'd even think to look here? The cops with their metal detectors would be scanning down the hillside as far as the road.

In the light of the faulty overhead bulb, the wall appeared to be smooth. I ran a hand lightly over the finish, expecting to feel the faintly irregular patch of plaster fill. The wall was unblemished. Not a mark anywhere. I shone the light at an angle, hoping for the roughness in the surface to jump into bas-relief. There was nothing. I made a circuit of the space, but there was no indication whatsoever that Dow had been shot to death here before the car was moved. No fragments of glass, no oil patches on the floor where his car had sat. I stood there astonished. I wanted to wail with disappointment. This had to be right. I had been so sure.

The door to the kitchen opened and Fiona appeared. She stood and stared at me. "I wondered what happened to you."

I looked back at her, mouth suddenly dry, desperate for an explanation that would cover my behavior.

"Detective Paglia was up here earlier, doing exactly the same thing. He checked the walls for a buried bullet and found none."

"Fiona, I'm sorry."

"I'm sure you are." She paused a moment. "One question, please. If I'd actually killed Dowan, why in the world would I hire you?"