DID MANAGE TO GET THE KIDS HOME BEFORE RITA WENT over the edge, but it was a very close call that was not made any easier when she found out that they had been to see severed heads. Still, they were obviously unbothered and even excited about their day, and Astor’s new determination to be a Mini-Me to my sister Deborah seemed to distract Rita from anything approaching actual wrath. After all, an early career choice could save a lot of time and bother later.

It was clear that Rita had a full head of steam and we were in for Babblefest. Normally I would simply smile and nod and let her run on. But I was in no mood for anything that smacked of normal. For the last two days I had wanted nothing but a quiet place and time to try to figure out where my Passenger had gone, and I had instead been pulled in every other direction possible by Deborah, Rita, the kids, even my job, of all things. My disguise had taken over from the thing it was supposed to be hiding, and I did not like it. But if I could make it past Rita and out the door, I would finally have some time to myself.

And so, pleading important case work that could not wait for Monday morning, I slid out the door and drove in to the office, enjoying the relative peace and calm of Miami traffic on a Saturday night.

For the first fifteen minutes of the drive I could not lose the feeling that I was being followed. Ridiculous, I know, but I had no experience with being alone in the night and it made me feel very vulnerable. Without the Passenger I was a tiger with a dull nose and no fangs. I felt slow and stupid, and the skin on my back would not stop crawling. It was an overall feeling of impending creepiness, the sense that I needed to circle around and sniff the back trail, because something was lurking there hungrily. And tickling at the edges of all that was an echo of that strange dream music, making my feet twitch in an involuntary way, as if they had someplace to go without me.

It was a terrible feeling, and if only I had been capable of empathy, I’m sure I might have had a moment of awful revelation, wherein I flung a hand to my forehead and sank to the ground, murmuring anguished regrets over all the times I had done the stalking and caused this dreadful feeling in others. But I am not built for anguish—at least, not my own—and so all I could think about was my very large problem. My Passenger was gone, and I was empty and defenseless if somebody really was tailing me.

It had to be mere imagination. Who would stalk Dutiful Dexter, plodding through his completely normal artificial existence with a happy smile, two children, and a new mortgage to a caterer? Just to be sure, I glanced into the rearview mirror.

No one of course; no one lurking with an ax and a piece of pottery with Dexter’s name on it. I was turning stupid in my lonely dotage.

A car was on fire on the shoulder of the Palmetto Expressway, and most of the traffic was dealing with the congestion by either roaring around it on the left shoulder or leaning on the horn and shouting. I got off and drove past the warehouses near the airport. At a storage place just off 69th Avenue a burglar alarm was clattering endlessly, and three men were loading boxes into a truck without any appearance of haste. I smiled and waved; they ignored me.

It was a feeling I was getting used to—everyone was ignoring poor empty Dexter lately, except, of course, whoever it was that had either been following me or not really following me at all.

But speaking of empty, the way I had weaseled out of a confrontation with Rita, smooth as it had been, had left me without dinner, and this is not something I willingly tolerate. Right now I wanted to eat almost as much as I wanted to breathe.

I stopped at a Pollo Tropical and picked up half a chicken to take with me. The smell instantly filled the car, and the last couple of miles it was all I could do to keep the car on the road instead of screeching to a halt and ripping at the chicken with my teeth.

It finally overwhelmed me in the parking lot, and as I walked in the door I had to fumble out my credentials with greasy fingers, nearly dropping the beans in the process. But by the time I settled in at my computer, I was a much happier boy and the chicken was no more than a bag of bones and a pleasant memory.

As always, with a full stomach and a clean conscience I found it much easier to shift my powerful brain into high gear and think about the problem. The Dark Passenger was missing; that seemed to imply that it had some kind of independent existence without me. That meant it must have come from somewhere and, quite possibly, gone back there. So my first problem was to learn what I could about where it came from.

I knew very well that mine was not the only Passenger in the world. Over the course of my long and rewarding career I had encountered several other predators wrapped in the invisible black cloud that indicated a hitchhiker like mine. And it stood to reason that they had originated somewhere and sometime, and not just with me and in my own time. Shamefully enough, I had never wondered why, or where these inner voices came from. Now, with the whole night stretching ahead of me in the peace and quiet of the forensics lab, I could rectify this tragic oversight.

And so without any thought of my own personal safety, I dashed fearlessly onto the Internet. Of course, there was nothing helpful when I searched “Dark Passenger.” That was, after all, my private term. I tried it anyway, just to be safe, and found nothing more than a few online games and a couple of blogs that someone really should report to the proper authorities, whoever was in charge of policing teenage angst.

I searched for “interior companion,” “inside friend,” and even “spirit guide.” Once again there were some very interesting results that made one wonder what this tired old world was coming to, but nothing that illuminated my problem. But as far as I know there has never been only one of anything, and the odds were that I was simply failing to come up with the correct search terms to find what I needed.

Very well: “Inner guide.” “Internal adviser.” “Hidden helper.” I went through as many combinations of these as I could think of, switching around the adjectives, running through lists of synonyms, and always marveling at how New Age pseudo-philosophy had taken over the Internet. And still I came up with nothing more sinister than a way to tap my powerful subconscious to make a killing in real estate.

There was, however, one very interesting reference to Solomon, of biblical fame, which claimed that the old wise guy had made secret references to some kind of inner king. I searched for a few tidbits of information on Solomon. Who would have guessed that this Bible stuff was interesting and relevant? But apparently when we think of him as being a wise, jolly old guy with a beard who offered to cut a baby in half just for laughs, we are missing out on all the good parts.

For example, Solomon built a temple to something called Moloch, apparently one of the naughty elder gods, and he killed his brother because “wickedness” was found inside him. I could certainly see that, from a biblical perspective, interior wickedness might be a fine description of a Dark Passenger. But if there was a connection here, did it really make sense that someone with an “inner king” would kill somebody inhabited by wickedness?

It was making my head spin. Was I to believe that King Solomon himself actually had a Dark Passenger of his own? Or because he was supposedly one of the Bible’s good guys, should I interpret it to mean that he found one in his brother and killed him because of it? And contrary to what we had all been led to believe, did he really mean it when he offered to cut the baby in half?

Most important of all, did it really matter what had happened several thousand years ago on the far side of the world? Even supposing that King Solomon had one of the original Dark Passengers, how did that help me get back to being lovable deadly me? What did I actually do with all this fascinating historical lore? None of it told me where the Passenger came from, what it was, or how to get it back.

I was at a loss. All right, then, it was clearly time to give up, accept my fate, throw myself on the mercy of the court, assume the role of Dexter, quiet family man and former Dark Avenger. Resign myself to the idea that I would never again feel the hard cool touch of the moonlight on my electrified nerve endings as I slid through the night like the avatar of cold, sharp steel.

I tried to think of something to inspire me to even greater heights of mental effort in my investigation, but all I came up with was a piece of a Rudyard Kipling poem: “If you can keep your head when all about you are losing theirs,” or words to that effect. It didn’t seem like it was enough. Perhaps Ariel Goldman and Jessica Ortega should have memorized Kipling. In any case, my search had taken me no place helpful.

Fine. What else could someone call the Passenger? “Sardonic commentator,” “warning system,” “inside cheerleader.” I checked them all. Some of the results for inside cheerleader were really quite startling, but had nothing to do with my search.

I tried “watcher,” “interior watcher,” “dark watcher,” “hidden watcher.”

One last long shot, possibly having to do with the fact that my thoughts were once again turning toward food, but quite justified nevertheless: “hungry watcher.”

Again, the results were mostly New Age blather. But one blog caught my eye, and I clicked on it. I read the opening paragraph and, although I did not actually say “Bingo,” that was certainly the gist of what I thought.

“Once again into the night with the Hungry Watcher,” it began. “Stalking the dark streets that teem with prey, riding slowly through the waiting feast and feeling the pull of the tide of blood that will soon rise to cover us with joy…”

Well. The prose was somewhat purple, perhaps. And the part about the blood was a little bit icky. But that aside, it was a pretty good description of how I felt when I went off on one of my adventures. It seemed likely that I had found a kindred spirit.

I read on. It was all consistent with the experience as I knew of it, cruising through the night with hungry anticipation as a sibilant inner voice whispered guidance. But then, when the narrative came to the point where I would have pounced and slashed, this narrator instead made a reference to “the others,” followed by three figures from some alphabet I didn’t recognize.

Or did I?

Feverishly, I scrabbled across my desk for the folder holding the file for the two headless girls. I yanked out the stack of photographs, flipped through them—and there it was.

Chalked on the driveway at Dr. Goldman’s house, the same three letters, looking like a misshapen MLK.

I glanced up at my computer screen: it was a match, no question about it.

This was way too much to be a coincidence. It clearly meant something very important; perhaps it was even the key to understanding the entire mess. Yes, highly significant, with just one small footnote: Significant of what? What did it mean?

On top of everything else, why was this particular clue afflicting me? I had come here to work on my own personal problem of a missing Passenger—had come late at night so I would not be harried by my sister or other demands of work. And now, apparently, if I wanted to solve my problem I would have to do it by working on Deborah’s case. How come nothing was fair anymore?

Well, if there was any real reward for complaining I hadn’t seen it so far, in a life filled with suffering and verbal skill. So I might as well take what was offered and see where it led.

First, what language was the script? I was reasonably certain it wasn’t Chinese or Japanese—but what about some other Asian alphabet I knew nothing about? I pulled up an online atlas and began checking off countries: Korea, Cambodia, Thailand. None of them had an alphabet that was even close. What did that leave? Cyrillic? Easy enough to check. I pulled up a page containing the whole alphabet. I had to stare at it for a long time; some of the letters seemed close, but in the end I concluded that it was not a match.

What then? What did that leave? What would somebody really smart do next, somebody like who I had once been, or even somebody like that all-time champion of bright guys, King Solomon?

A small beeping sound began to chirp in the back of my brain, and I listened to it for a moment before I answered it. Yes, that’s right, I said King Solomon. The guy from the Bible with an inner king. What? Oh, really? A connection, you say? You think so?

A long shot, but easy enough to check, and I did. Solomon would have spoken ancient Hebrew, of course, which was simple to find on the Web. And it looked very little like the characters I had found. So that was that, and there was no connection: ipso facto, or some other equally compelling Latin saying.

But hold on: Didn’t I remember that the original language of the Bible was not Hebrew but something else? I beat my gray cells brutally, and they finally came out with it. Yes, it had been something I remembered from that unimpeachable scholarly source, Raiders of the Lost Ark. And the language I was looking for was Aramaic.

Once again, it was easy to find a Web site eager to teach us all to write Aramaic. And as I looked at it, I became eager to learn, because there was no doubt about it—the three letters were an exact match. And they were, in fact, the Aramaic counterparts of MLK, just the way they looked.

I read on. Aramaic, like Hebrew, did not use vowels. Instead, you had to supply them yourself. Very tricky, really, because you had to know what the word was before you could read it. Therefore, MLK could be milk or milik or malik or any other combination, and none of them made sense. At least not to me, which seemed like the important thing. But I doodled anyway, trying to make sense of the letters. Milok. Molak. Molek—

Once again something flickered in the back of my brain and I grabbed at it, pulled it forward into the light, and looked it over. It was King Solomon again. Just before the part where he killed his brother for having wickedness inside, he had built a temple to Moloch. And of course, the preferred alternative spelling for Moloch was Molek, known as the detestable god of the Ammonites.

This time I searched “Moloch worship,” scanning through a dozen irrelevant Web sites before hitting a few that told me the same things: the worship was characterized by an ecstatic loss of control and ended with a human sacrifice. Apparently the people were whipped into a frenzy until they didn’t realize that little Jimmy had somehow been killed and cooked, not necessarily in that order.

Well, I don’t really understand ecstatic loss of control, even though I have been to football games at the Orange Bowl. So I admit I was curious: How did they work that trick? I read a little closer, and found that apparently there was music involved, music so compelling that the frenzy was almost automatic. How this happened was a little ambiguous—the clearest reading I found, from an Aramaic text translated with lots of footnotes, was that “Moloch sent music unto them.” I supposed that meant a band of his priests would march through the streets with drums and trumpets…

Why drums and trumpets, Dexter?

Because that was what I was hearing in my sleep. Drums and trumpets rising into a glad chorus of singing and the feeling that pure eternal joy was right outside the door.

Which seemed like a pretty good working definition of ecstatic loss of control, didn’t it?

All right, I reasoned: just for the sake of argument, let’s say Moloch has returned. Or maybe he never went away. So a three-thousand-year-old detestable god from the Bible was sending music in order to, um—what, exactly? Steal my Dark Passenger? Kill young women in Miami, the modern Gomorrah? I even dragged in my earlier insight from the museum and tried to fit it into the puzzle: so Solomon had the original Dark Passenger, which had now come to Miami, and, like a male lion taking over a pride, was therefore trying to kill the Passengers already here, because, um…Why exactly?

Or was I really supposed to believe that an Old Testament bad guy was coming out of time to get me? Wouldn’t it make more sense simply to reserve myself a rubber room right now?

I pushed at it from every side and still came up with nothing. Possibly my brain was starting to fall apart, too, along with the rest of my life. Maybe I was just tired. Whatever the case, none of it made sense. I needed to know more about Moloch. And because I was sitting in front of the computer, I wondered if Moloch had his own Web site.

It took only a moment to find out, so I typed it in, went down the list of self-important self-pitying blogs, online fantasy games, and arcane paranoid fantasies until I found one that looked likely. When I clicked on the link, a picture began to form very slowly, and as it did—

The deep, powerful beat of the drum, insistent horns rising behind the pulsing rhythm to a point that swells until it can no longer hold back the voices which break out in anticipation of a gladness beyond knowing—it was the music I had heard in my sleep.

Then the slow blossom of a smoldering bull’s head, there in the middle of the page, with two upraised hands beside it and the same three Aramaic letters above.

And I sat and stared and blinked with the cursor, still feeling the music crash through me and lift me toward the hot glorious heights of an unknown ecstasy that promised me all the blinding delight ever possible in a world of hidden joy. For the first time in my memory, as these passionate strange sensations washed over and through me and finally out and away—for the first time ever I felt something new, different, and unwelcome.

I was afraid.

I could not say why, or of what, which made it much worse, a lonely unknown fear that roiled through me and echoed off the empty places and drove away everything but the picture of that bull’s head and the fear.

This is nothing, Dexter, I told myself. An animal picture and some random notes of not terribly good music. And I agreed with myself completely—but I could not make my hands listen to reason and move off my lap. Something about this crossover between the supposedly unconnected worlds of sleep and waking made telling them apart impossible, as if anything that could show up in my sleep and then appear on my screen at work was too powerful to resist and I had no chance of fighting it, had simply to watch as it dragged me down and under into the flames.

There was no black, mighty voice inside me to turn me into steel and fling me like a spear at whatever this was. I was alone, afraid, helpless, and clueless; Dexter in the dark, with the bogeyman and all his unknown minions hiding under the bed and getting ready to pull me out of this world and into the burning land of shrieking, terror-filled pain.

With a motion that was far from graceful I lunged across my desk and yanked the computer’s power cord from the wall and, breathing rapidly and looking like someone had attached electrodes to my muscles, I jerked backward into my chair again, so quick and clumsy that the plug on the end of the cord whipped back and snapped me on the forehead just above the left eyebrow.

For several minutes I did nothing but breathe and watch as the sweat rolled off my face and plopped onto my desk. I had no idea why I had leaped off my chair like a gaffed barracuda and yanked the cord out of the wall, beyond the fact that for some reason it had felt like I had to do it or die, and I couldn’t understand where that notion came from, either, but come it had, barreling out of the new darkness between my ears and crushing me with its urgency.

And so I sat in my quiet office and gaped at a dead screen, wondering who I was and what had just happened.

I was never afraid. Fear was an emotion and Dexter did not have them. To be afraid of a Web site was so far beyond stupid and pointless that there were no adjectives for it. And I did not act irrationally, except when imitating human beings.

So why had I pulled the plug, and why were my hands trembling, all from a cheerful little tune and a cartoon cow?

There were no answers, and I was no longer sure I wanted to find them.

I drove home, convinced that I was being followed, even though the rearview mirror stayed empty the whole way.

The other really was quite special, resilient in a way that the Watcher had not seen in quite some time. This was proving to be far more interesting than some of the ones in the past. He began to feel something that might even be called kinship with the other. Sad, really. If only things had worked out differently. But there was a kind of beauty to the inevitable fate of the other, and that was good, too.

Even this far behind the other’s car, he could see the signs of nerves starting to fray: speeding up and slowing down, fiddling with the mirrors. Good. Uneasy was just the beginning. He needed to move the other far beyond uneasy, and he would. But first it was essential to make sure the other knew what was coming. And so far, in spite of the clues, he did not seem to have figured it out.

Very well, then. The Watcher would simply repeat the pattern until the other recognized just what sort of power was after him. After that, the other would have no choice. He would come like a happy lamb to the slaughter.

Until then, even the watching had purpose. Let him know he was watched. It would do him no good, even if he saw the face watching him.

Faces can change. But the watching would not.