"So?"

"I located Payton's car. It's still in decent shape, believe it or not. The damage looked more characteristic of C-4 to me. A lot of metal shearing, small shrapnel. I sent a fragment of the engine to an expert for analysis. Last night he confirmed it. C-4."

Stone nods thoughtfully. "C-4 was damn hard to come by in 1968. And your Klan boys didn't know shit about using it."

He has not directly refuted my assertion. "You're saying the expert is wrong?"

"It's happened before. But that's not what I'm saying."

"Then you're saying the Klan wasn't behind the murder."

"I didn't say that either. What kind of theories were in the report?"

"Mostly rumors. I thought one story was plausible. Someone thought Payton's death was a mistake. That the real target was the president of the local NAACP. He apparently rode to and from work with Payton a good bit."

Stone nods with familiarity. "What about the one where a black button man was hired from New Orleans to come up and pop Payton? Strictly a money hit."

This scenario had been reported to the police by a Louisiana woman. Her story was given credence because she turned down the full fifteen-thousand-dollar reward rather than give more details. She claimed she'd never live to spend the money. No further information was recorded in the file.

"Is that what you think happened?" I ask.

Stone smiles. "It could have happened. How old are you, Mr. Cage? Thirty-five?"

"Thirty-eight."

"Do you have any idea what things were like in 1968?"

"In Mississippi?"

"In America."

"Well... the country was turning against Vietnam. LBJ was being ground down by the war. Civil rights hit its high-water mark, with Martin Luther King at his peak before he-"

"I'm glad you passed your civics course," he interrupts. "I'm talking about reality, son. Behind the scenes. In 1968 a few powerful and paranoid men were trying to hold their vision of this country together in the face of social revolution. It was a tide they had no prayer of stopping, but they didn't understand that, and they used every method at their disposal to try."

As Stone speaks, I glimpse a furnace of anger seething behind his eyes. He has tight control over it, but he's been holding in that anger for years.

"The Constitution meant nothing to these men. Richard Nixon was one of them, but he was bush league compared to them."

"You're talking about J. Edgar Hoover?"

"Hoover was one of the more visible."

"How does this tie in with Del Payton?"

Stone looks from my face to Caitlin's, as though deciding whether we have earned the right to any of his hard-won knowledge. Now that I think of it, he's probably seventy years old, but his tanned, weathered face and soldier's eyes convey the strength of a much younger man.

"A lot of blacks were killed in Mississippi in the nineteen-sixties," he says in a deliberate voice. "Del Payton was one. But he was killed later than most. Have you thought about that? A lot of the race murders happened around sixty-four. Payton came later."

"What's the significance of that?"

"Just something for you to think about."

Everything's riddles with this guy. "Martin Luther King was assassinated in 1968," I point out.

He shakes his head. "I'm talking about grassroots murders."

Caitlin looks ready to pop; she obviously has a hundred questions, but I hope she won't ask them. The harder we push Stone, the more he'll resist us. From lawyerly instinct, I move away from Del Payton and ask a question to which I already know the answer.

"Did you serve your full term of service with the Bureau? That is to say, did you retire at full pension?"

He takes a deep breath, and a little more anger spills through his eyes. "I'm going to answer that because you're going to find it out anyway, if you don't already know. And because I'm not ashamed to answer. I was asked to resign in 1972. Officially for alcoholism."

Caitlin nods with empathy. "Did your drinking have anything to do with the Del Payton case?"

"That I won't answer. But I'll tell you this. If every alcoholic in the Bureau in 1972 had been asked to resign, Hoover couldn't have mounted a raid on a cathouse. You had to drink just to stomach what was going on back then."

"What kind of things are you talking about?" I ask.

"You ever read American Tabloid, by James Ellroy?"

"No."

"Give it a look. Things weren't quite that crazy, but they were damn close."

"How did you earn a living after leaving the Bureau?"

A sour look wrinkles his face. "Worked as a private dick for a while. Big firm. That was sleazier than Hoover's Bureau, so I quit. Worked as an insurance investigator. I drank professionally for a few years. I was close to dying when my daughter pulled me back up to the light. I finally hung out my shingle here and started helping the locals fight the government and the mining companies. That suited my temperament."

"Were you in charge of the Payton investigation?"

"I was."

"How did you like Natchez?"

"It wasn't much like the rest of Mississippi. Better in a lot of ways. More liberal, the people more educated. But in a way that made the things that happened there worse. You know? Because there were people there who knew better."

Stone goes to the stove and returns with the coffeepot, talking as he refills our cups. "When I was assigned to that case, I was only a couple of years younger than Payton was when he died. I had a wife and two kids, and I still had a few illusions. That case knocked them right out of me."

He sets the empty pot on the stone hearth of his fireplace and takes his chair. "Do you have any illusions left, Mr. Cage?"

"Not many."

He studies me as if judging the truth of my statement.

Caitlin takes this chance to jump in. "How do you feel personally about J. Edgar Hoover?"

Stone examines his fingernails, a seemingly casual gesture calculated to hide inner turmoil. "I don't care if the man wore Frederick's of Hollywood to bed every night. I don't care if he wanted to marry Clyde Tolson, that pompous ground squirrel. But the man presented himself to this nation as a paragon of law and order. A champion of right. And the son of a-" Stone winces like Humphrey Bogart-"the man didn't know the meaning of the words. He stole from the government, misused agents for personal gain, colluded with mobsters, broke the securities laws. . . . Human beings just weren't meant to have that much power. Jesus, I need a drink."

"Go right ahead." It's barely two p.m., but I feel like I could use one too.

Stone shakes his head. "Four months sober. It's a daily battle."

Watching him get control of his craving is like watching a man fight a malarial fever. As a younger man Dwight Stone did what most Americans never do-peered behind the curtain at the men running the machine-and he is a different man because of it. America isn't the same country now, of course. It's better in a lot of ways. But I can see how this wouldn't matter to Stone. We are, all of us, men of our own eras.

"You want to destroy Leo Marston?" he asks, his eyes hard.

The name flows easily from his lips. He has thought about Marston since 1968. "Do you think that's possible?"

"Put it this way. I think it's a noble goal."

Caitlin presses her knee hard against mine. I can feel her excitement, but I don't look at her. It's suddenly as clear to me as the mountain air outside Stone's cabin: the man sitting across from us knows who killed Del Payton, and why, and probably why that knowledge was never made public.

"But it won't be easy," he adds.

"That's what someone else told me."

"Who?"

Stone is playing it so close to the vest that I decide to keep Ike Ransom's name to myself. "You wouldn't know him. He came along after your time. But he's interested in the case, and he hates Leo Marston. What can you tell us about Marston's involvement?"

"Nothing more than I have already."

"Will you help us with this case?"

A deep conflict is playing itself out behind the old agent's eyes, one only hinted at by the tension in his muscles and the tightness of his lips. "I can't," he says finally.

"Why not?"

"Because despite what you see here, I'm not alone in the world. There are people I care about. I'm thinking of getting married, believe it or not. And I won't put innocent lives at risk for something that can't make any difference now."

"Do you really think there's that much danger?" asks Caitlin.

Stone rakes a hand along his jaw. "Make no mistake about it. You are already swimming with sharks."

His baleful eyes linger on mine, trying to impress his seriousness upon me. He reminds me of an old homicide cop I knew in Houston, a guy who'd been shot twice in the line of duty. When he told you to start worrying, it was time to put on the Kevlar.

"What about the Mississippi Sovereignty Commission files?" Caitlin asks. "Payton's is sealed. Do you think we could learn anything significant from it?"

"Those were state files. I never saw them."

"The FBI file is sealed as well. Does that surprise you?"

He barks a laugh. "I'd be surprised if the damn thing exists at all."

"It exists, all right," I tell him. "Forty-four volumes. The question is, what's in it?"

"Forty-three volumes of nothing, and my final report."

"What was in your final report?"

He sighs and looks past us, to the front windows of his cabin. "I can't tell you that."

Caitlin glances at me, her lower lip pinned by her teeth, her gesture of concentration. "The file was ostensibly sealed for reasons of national security," she says. "Can you give us any hint as to what the Payton case could have to do with national security?"

Stone taps his fingers nervously on the arm of his chair. "Del Payton was killed five weeks after Martin Luther King was assassinated, and three weeks before Robert Kennedy. Have you considered that?"

Caitlin and I share a look.

"Are you saying Payton's death was somehow connected to those assassinations?" I ask.

"Kings climb to eminence over men's graves, Mr. Cage."

"Who said that?"

"A very wise man."

"Who is the king you're referring to?"

"I'm just quoting an old poet, son."

"Last night I was threatened by the present director of the FBI. Why should John Portman be concerned with a thirty-year-old civil rights murder?"

"Why do you assume Payton's death was a civil rights murder?"

At this echo of Ike Ransom, my heart twitches in my chest. "You're saying it wasn't?"

"I'm just thinking aloud."

"Have you ever met Portman?" I ask, my pulse racing.

"I met him." Stone's distaste is plain. "He joined the Bureau a few years before I got out."

"What did you think of him as an FBI agent?"

"He was a brown-nosing, manipulative, Ivy League rich boy with the moral sense of a cat. A good little German with obsessive ambition. After seven years in the field they promoted him to the Puzzle Palace."

"The Puzzle Palace?" Caitlin asks.

"The Hoover Building. FBI Headquarters. The guys who work there call it SOG. For 'Seat of Government.' It's the perfect environment for devious, back-stabbing sons of bitches. I apologize for the profanity. I forgot about your little girl."

Annie didn't hear him. She's busy examining a rock collection displayed in a glass-box end table. If she had heard him, she would have yelled, Mr. Stone said a bad word!

"Did you keep any personal notes from the Payton investigation?" I ask, recalling the habits of that cop Stone brought to mind a moment ago. "Something you didn't turn in to your superiors, maybe?"

His gaze wanders to the rear window, where the stream rushes along the rocks. "You want to learn what I learned back in 1968?" He looks back at me, his eyes burning into mine as though striving to communicate something he cannot say aloud. "Do what I did. Talk to the eyewitnesses. Have you done that? Have you talked to the eyewitnesses?"

I admit that I haven't.