She got off and turned to me. “Guy’s voice.”

“So let’s go take a peek.”

“Didn’t… mmm… sound like Carp. I only heard him for that one minute at Rachel’s, but he seemed kinda squeaky. High-pitched. This guy had some hormones. His whole attitude was sorta… cool.”

“I dunno,” I said. And I didn’t.

MARY GRIGGS lived in a small brick apartment building in the Ballston area of Arlington, an upwardly mobile neighborhood with a little rolling contour, a four-acre park in the middle of it, the whole thing almost as green as Longstreet. The day was insufferably hot and humid. By contrast, the park looked pleasant and cool, with big spreading trees and what I took to be government workers sitting on the park benches eating their bag lunches.

We left the car a block off the park, down toward a busy street. LuEllen had spotted a deli as we went in, and we stopped and got sandwiches-apparently the source of the government sandwiches and white paper bags-carried our own lunches up the block and across the street to the park, found a bench where we could see the front of the Griggs apartment building, and nibbled on the sandwiches. Off to our left, a woman was lying on a blanket, reading a book. A bunch of kids were sliding down a curvy slide at a playground, and a park worker was changing a net at a beach-volleyball court that featured real ankle-deep yellow sand.

Because I was carrying a gun, I’d worn a sport coat, despite the heat, and had the revolver in the left breast pocket. There might have been a little fullness on that side, but nothing obvious. Still, I could feel the weight hanging off my chest.

“That kind of building,” LuEllen said, looking at Griggs’s apartment, “is the worst of all possibilities.”

“Worse than a Saddle River jeweler’s house with a hundred-thousand-dollar alarm system?”

“In some ways,” she said, launching into a burglar’s analysis. “You have an insider in the jeweler’s house, so you eventually figure out a way to handle the system. You’ve got somebody telling you when the house will be more or less empty, and even if it’s not empty, you can spot the people still inside. But you get a place like this, people are coming and going all the time-nobody knows who’ll be coming and going, or why. It’s random. And the building is older so it’s probably got relatively thin walls: if you have to break a door, somebody’ll hear you. Or they’ll see the damage. Plus, everybody inside probably recognizes strangers.” She took a bite out of her sandwich and studied the building.

“Just don’t tell me you’d go in over the roof,” I said. She liked ropes and climbing.

“I was just thinking that was a possibility,” she admitted. “You avoid a lot of issues that way. And look at the windows. They’re the old-style windows that open, with a twist-lock. You poke a hole through the glass, twist the lock, slide it up, and you’re in. You don’t meet anybody in the hallways, you don’t have to break any doors. No visible damage.”

“Of course, you have to get on the roof.”

“That can be done.” She studied it some more. A guy in a funny old-fashioned snap-brimmed hat strolled by, led by a bulldog on a leash. The guy took a good look at LuEllen; the bulldog sniffed what I assumed was a bed of pansies-they looked like the African violets in Strom’s sink from the day before, but in lighter colors, and with more variety-and then lifted a leg and peed on them.

I was following them on their path through the park when I saw the guy with the binoculars. I casually turned back to LuEllen and said, “If you look past the back of my head, you’ll see a guy in a blue shirt looking at us with binoculars. Either that, or he’s looking at a really low bird.”

She turned toward me and laughed, threw back her head, and said, “I see him. Yup. Who is it? Somebody tagged us? How did that happen? So now what? We run?”

“Maybe not run, but we go. I’ll wad up the sandwich bag and walk over to the trash can to throw it in, and you can sit here. Then I’ll call you over, like I’m looking at something. That’ll get us a hundred feet toward the car.”

“I hope he doesn’t have a camera. I hope he doesn’t have a long lens. I hope he doesn’t have our faces.”

“Just binoculars so far,” I said. When people look at you with binoculars, or shoot your picture with a long lens, they unconsciously take a particular position that gives them away. A guy looking at you with binoculars, for example, will have his arms and hands in almost a perfect triangle, elbows out, fists meeting in front of his eyes. Photographers, on the other hand, scrunch their arms together as they support the camera and lens, and their faces are completely obscured by the camera body. When you see either one of them, you won’t mistake the positions for anything else.

I got up, took LuEllen’s bag, made a little show of scrunching it up. She pulled her feet onto the park bench, while I strolled toward the trash basket. I dumped the bag, did a double take at something, then waved LuEllen over.

She got up and strolled toward me. I was looking at her, and past her. The guy with the binoculars was gone. “We better hurry,” I told her when she came up. “He’s out of sight.”

She nodded and we turned, walked a little way toward the edge of the park, and then I turned and walked backward with her, saying, “Yadda yadda yadda yadda,” so that I appeared to be talking with her, but still couldn’t pick up the guy with the binoculars. “Okay,” I said. “Time to move faster.”

She nodded and we both started jogging down the diagonal sidewalk to the corner, the car a block farther on. At the cross street I looked back at the park, but didn’t see anything-and then Carp broke out of a little copse of trees a scant seventy yards away. He was running fast, for as big as he was, a pair of binoculars dangling from his neck, and he had a gun in one hand.

“He’s coming,” I said. “It’s Carp and he’s got the gun.” LuEllen looked the same way and we broke into a hard run. Carp was about as close to us as we were to the car. He hip-checked a Cadillac in the street as we ran down the sidewalk toward the car, and I said, “We’re gonna slow down getting in and getting started.” I pulled the car keys out of my pants pocket and handed them to her. “You drive. If he opens up on us, I’ll slow him down.”

She didn’t say anything: that would have been a waste of time. She was moving, breaking off the sidewalk to run between two parked cars, then up the street toward the driver’s side of our car. Carp broke around the corner deli when we were still twenty yards away from it. Then LuEllen was inside and I dragged open the passenger-side door, slipping the revolver out of my jacket pocket, and she shouted, “Get in,” and Carp, now forty yards away, slowed to a walk, brought his weapon up, and fired at me.

I wasn’t aware of the slugs going by-you can actually hear them go by if you’re far enough from the blast of the gun, a whip-snap sound. That’s if you’re not preoccupied by something else, like shooting back. I was shooting back, carefully, taking my time, aiming everything into a tree next to him. I could see people far down the street, and while I didn’t think the.38 would reach that far, I didn’t want to kill some old lady or her dog.

I fired four shots and suddenly he stopped shooting, looked at his gun, looked at me. I took a step toward him and he turned and ran back around the corner.

I jumped in the car and said, “Go,” and LuEllen ripped out of the parking space and we were down the street, fast for the first hundred yards, down to the corner, then we were around the corner and away. As we went, I was looking out the rear window. He was gone.

“You shot at him,” LuEllen said in her calmest voice, which she uses only when she’s intensely cranked.

“Not exactly. I shot an elm tree to death. Can’t shoot him until we get the laptop. Sure as shit slowed him down, though.”