I see myself as a young man, standing at another grave, watching as they lower my mother down. Beside me now is the old man, my grandfather. We have traveled down from Scarborough, Maine-the place to which we fled after the death of my father, the place in which my mother was born-for the funeral, so that my mother can be buried beside my father, as she has always wished, for she has never stopped loving him. Around us, old men and women have gathered. I am the youngest person present.

I see snowfalls in winter. I see the old man grow older. I leave Scarborough. I become a policeman, like my father, like my grandfather. There is a legacy to be acknowledged, and I will not be found wanting. When my grandfather dies, I return to Scarborough and fill in the grave myself, spadefuls of earth carefully falling on the pine casket. The morning sun shines down on the cemetery and I can smell the salt on the air, carried from the marshes to the east and the west. Nearby, a golden-crowned kinglet chases cluster flies, filthy gray insects that lay their eggs inside living earthworms, their young eventually consuming the host from within, and seek shelter from the winter in the chinks and cracks of houses. Above, the first of the Canada geese fly south for the winter, a pair of ravens flanking them like black fighters escorting a flight of bombers.

And as the last patch of wood disappears, I hear the sound of children's voices coming from the Lil Folks Farm nursery school close by the cemetery, the noise of their games high and joyful, and I cannot help but smile, for the old man would have smiled as well.

And then there is one more grave, one more set of prayers read from a tattered book, and this one tears my world apart. Two bodies are laid down to rest side by side, just as I used to find them resting close to each other when I returned at night to our Brooklyn home, my three-year-old daughter sleeping quietly in the curled quarter-moon of her mother's form. In one instant, I ceased to be a husband. I ceased to be a father. I had failed to protect them, and they had been punished for my failings.

All of these images, all of these memories, like the forged links of a chain, stretch back into the darkness. They should be put away, but the past is not so easily denied. Things left unfinished, things left unsaid, they all, in the end, come back to haunt us.

For this is the world, and the echo of worlds.

Billy Purdue's knife bit deeper into my cheek, sending a trickle of blood down my face. His body was pressed hard against mine, his elbows pinning my arms to the wall, his legs tensed against mine so I couldn't go for his groin. His fingers tightened on my neck and I thought:

Billy Purdue. I should have known better…

Billy Purdue was poor; poor and dangerous with some bitterness and frustration added to spice up the pot. The threat of violence was always imminent with him. It hung around him like a cloud, obscuring his judgment and influencing the actions of others, so that when he stepped into a bar and took a drink, or picked up a pool cue for a game, trouble would inevitably start. Billy Purdue didn't have to pick fights. Fights picked him.

It acted like a contagion, so that even if Billy himself managed to avoid conflict-he generally didn't seek it, but when he found it he rarely walked away-five would get you ten that he would have raised the testosterone level in the bar sufficiently to cause someone else to consider starting something. Billy Purdue could have provoked a fight at a conclave of cardinals just by looking into the room. Whatever way you considered it, he was bad news.

So far, he hadn't killed anybody and nobody had managed to kill him. The longer a situation like that goes on, the more the odds are stacked in favor of a bad end, and Billy Purdue was a bad beginning looking for a worse end. I'd heard people describe him as an accident waiting to happen, but he was more than that. He was a constantly evolving disaster, like the long, slow death of a star. His was an ongoing descent into the maelstrom.

I didn't know a whole lot about Billy Purdue's past, not then. I knew that he'd always been in trouble with the law. He had a rap sheet that read like a catalog entry for minor crimes, from disrupting school and petty larceny to DWD, receiving stolen goods, assault, trespassing, disorderly conduct, nonpayment of child support… The list went on and on; sometimes, it seemed like half the cops in Maine must have cuffed Billy at some point. He was an adopted child and had been through a succession of foster homes in his youth, each one keeping him for only as long as it took the foster parents to realize that Billy was more trouble than the money from social services was worth. That's the way some foster parents are: they treat the kids like a cash crop, like livestock or chickens, until they realize that if a chicken acts up you can cut its head off and eat it for Sunday dinner, but the options are more limited in the case of a delinquent child. There was evidence of neglect by many of Billy Purdue's foster parents, and suspicion of serious physical abuse in at least two cases.

Billy had at last found some kind of home with an old guy and his wife up in the north of the state, a couple that specialized in tough love. The guy had been through about twenty foster kids by the time Billy arrived and, when he got to know Billy a little, maybe he figured that this was one more too many. But he'd tried to straighten Billy out and, for a time, Billy was happy, or as happy as he could ever be. Then he started to drift a little. He moved to Boston and fell in with Tony Celli's crew, until he stepped on the wrong toes and got parceled back to Maine again, where he met Rita Ferris, seven years his junior, and they married. They had a son together, but Billy was always the real child in the relationship.

He was now thirty-two and built like a bull, the muscles on his arms like huge hams, his hands thick and broad, the fingers almost swollen in their muscularity. He had small pig eyes and uneven teeth, and his breath smelled of malt liquor and sourdough bread. There was dirt under his nails and a raised rash on his neck, the heads white, where he had shaved himself with an old, worn blade.

I was given the opportunity to observe Billy Purdue from close quarters after I failed to put an armlock on him and he pushed me hard against the wall of his silver Airstream trailer, a run-down thirty-footer out by the Scarborough Downs racetrack, that stank of unwashed clothes, rotting food and stale seed. One of his hands was clasped hard around my neck as he forced me upward, my toes barely touching the floor. The other held the short-bladed knife an inch beneath my left eye. I could feel the blood dripping from my chin.

The armlock probably hadn't been a good idea. In fact, on the scale of good ideas, it ranked somewhere between voting for Pat Buchanan and invading Russia in the winter. I would have had a better chance of successfully armlocking the trailer itself; even with all of my strength pulling on it, Billy Purdue's arm had stayed as rigid and immobile as the statue of the poet in Longfellow Square. While my mind was registering just how bad an idea it had been to go for the lock, Billy had pulled me forward and slapped me hard across the head, open palmed, with his enormous right hand, then pushed me up against the side wall of the trailer, his huge forearms holding my arms in place. My head was still ringing from the blow and my ear ached. I thought my eardrum had burst but then the pressure on my neck started to increase and I realized that I might not have to worry about my eardrum for much longer.

The knife twisted in his hand and I felt a fresh burst of pain. The blood was running freely now, dripping from my chin onto the collar of my white shirt. Billy's face was almost purple with rage and he was breathing heavily through clenched teeth, spittle erupting as he wheezed out.