True to his word, Dad is standing in his carport when I arrive. In the glow of my headlights, I see the Browning automatic hanging from his right hand. I leave my engine running and walk up to him. Seventy-two years old, half crippled by diabetes, arthritis, and coronary artery disease, he still manages to practice medicine more hours per week than most internists fresh out of medical school.

”Thanks,“ I say, taking the gun.

”Is Annie in danger?“ he asks.

This is no idle question. The man who burned our house five years ago also targeted my daughter for kidnapping and death. ”Not yet. But I try to learn from past mistakes.“

Dad nods. ”By the time most people realize they’re in danger, it’s too late to do anything about it.“

”I may give Daniel Kelly a call.“

”Sounds like a good idea. I thought he was working in Afghanistan.“

Daniel Kelly is a former Delta Force operator who worked with me during the Del Payton case. Now an operative for a prestigious corporate security firm based in Houston, Kelly has truly frightening skills, but more important, he knows and loves my family.

Dad probes my eyes with a gaze that has searched out illness and deception for more than forty years. ”What happened tonight? You look shell-shocked.“

”Somebody tried to kill a drug dealer. Three black guys got killed-teenagers, probably.“

Dad shakes his head. ”That’s not all of it, is it?“

”Paul and Janet Wilson were just murdered in their home.“

Now it’s my father who looks shell-shocked. ”Professor Wilson?“

”And his wife. Cut to pieces.“

”Who the hell would do that?“

”I’m not sure yet. I think the killer was after an exchange student who lives with them.“

”Why? Is this a drug thing, too?“

”I think so.“

”Are you involved in that case?“

”In a way. I’m afraid it might be connected to Drew’s case.“

”How?“

”This is you and me, right?“

Dad gives me a look that makes me embarrassed to have asked the question.

”Ellen Elliott was addicted to Lorcet,“ I tell him. ”Drew had the DEA on his back for keeping her supplied, so his girlfriend started getting it for Ellen to make life easier on Drew. She got it from this black dealer.“

Dad closes his eyes. ”Damn it. I suspected something like that.“

”What?“

”Drew called me once and asked if I’d write Ellen a scrip for fifty Lorcet.“

”Did you?“

”Sure. But I knew if he was asking me to do it, he was already at the limit himself.“

”Do a lot of local people abuse that drug?“

”Patients ask for it by name every day. I take it myself for arthritis. Couldn’t get by without it. But it’s addictive as hell. You don’t hear about it much. Oxycontin gets all the headlines, but Lorcet is an opium derivative, too, and it makes you feel pretty good.“

I look down at the Browning and familiarize myself with the safety mechanisms.

Dad grips my wrist in his hand. ”You’re shaking, Penn.“

”That crime scene was pretty bad.“

”What can I do to help?“

This is no idle offer. At nineteen my father was part of the infamous retreat from the Chosin Reservoir in Korea. He also had occasion to use violence a couple of times in civilian life after that. But I would never put him in harm’s way now, despite his willingness to put himself there. ”Nothing right now, but I appreciate the offer.“

”You know my number.“

As I start to go, an idea hits me. ”Do you have a pistol with one of those lights on it? Sonny Cross had one, and it looked pretty useful.“

”A laser sight?“

”No, it was more like a powerful flashlight.“

”A tactical light,“ Dad says. ”Sure, I’ve got one I can mount on that Browning. Be right back.“

He disappears into the house, then returns with a small black object. ”Look here. You flip this catch, then slide the light onto these grooves cut into the gun stock. When you let go of the catches, it’s locked on.“ He demonstrates the move for me twice. ”To flick on the light, just push up this lever with your trigger finger.“

I test the light by shining it toward Dad’s backyard fence. An armadillo rooting in the yard freezes, then scuttles away.

”Take him out,“ Dad says. ”Those bastards tear this yard to pieces.“

”I’ll leave him to you. I’d better get moving. I’ve got a babysitter keeping Annie.“

Dad frowns. ”Caitlin’s still out of town?“

”Yeah.“

He shakes his head but says nothing. He doesn’t have to.

”I’ll see you, Dad.“

”Remember,“ he calls, ”there’s more where that came from.“

The gun or Caitlin?I wonder. But of course he meant both.

By the time I reach Washington Street, my hands have steadied a bit. I park in front of my house and look over at the town house to the right of mine-Caitlin’s house when she’s in town, which is less and less of late. Some nights when she’s gone, I look that way with an infantile wish that I’ll see lights on inside, signifying a surprise return, but that’s never happened. And tonight I don’t even feel the wish. It’s just an empty house.

I walk up the three steps to my familiar blue door, unlock it, and walk inside. For a brief moment I’m suffused with terror, an irrational fear that I’ll find Annie and Mia slashed and bleeding on the floor. But of course they’re not. Mia is asleep on the couch in my study, balled up beneath the comforter from my bed. Her cell phone sits on the back of the couch beside a paperback copy of Donna Tartt’s The Secret History. Annie is undoubtedly asleep in her room upstairs.

I don’t know whether to wake Mia or to let her sleep through the night. I don’t even know what to do about myself. I’m exhausted, but I don’t think I could sleep without a strong sedative. I should have asked Dad for something. Maybe a Lorcet.

Sensory overload,says a voice in my head. I told Deputy Burns the truth about my past in Houston, but that was a long time ago. Another life ago. The grotesque scenes I saw tonight hit me with the same impact they would a layman, or perhaps even harder. I think human beings can endure only so much carnage and waste; beyond a certain limit, one either breaks down or becomes utterly desensitized. That break point differs from person to person, but I sense that I’m close to mine. I’ve seen dozens of murder victims in person, and hundreds in crime scene photographs. I’ve watched nine of the twelve men and women I sent to death row be executed. I watched my wife die a horrific death from cancer. And I watched the maid who practically raised me die from third-degree burns despite my best efforts to save her. Spread among those dead are the people I’ve watched suffer but live to tell about it. If this tally continues to grow, I’m not sure which side of the equation I’ll tip over on-breakdown or numbness.

”Hey,“ says Mia, blinking and smiling up from the sofa. ”What time is it?“

”Around midnight,“ I reply, setting my father’s Browning on top of a glass-fronted bookcase behind me.

Mia squints at me. ”Are you okay? You don’t look good.“

”I’m not sure.“

She rises from the couch and walks past me to the hall. ”Stay there. I’ll make some tea.“

I obey, grateful to be told what to do. When Mia returns with the tea, I’m still standing in the spot where she left me, staring at the rows of hardcover books on my shelves.

”Come sit,“ she says, setting two china cups on the coffee table before the sofa.

”Sarah chose those cups,“ I say softly.

Mia watches me closely. ”Your wife?“

”Yes.“

”I’ve seen pictures of her in the photo albums. Annie showed them to me.“

I nod distantly.

”I think Annie still misses her a lot.“ Mia sucks her lips between her teeth as if reluctant to continue. ”Do you?“

”Sometimes.“

”I thought you’d have a family picture out. With the three of you, you know?“

”I used to. I think it started to bother Caitlin after a while. She never said anything, but I took it down when I repainted and then pretended to forget to put it back up.“