Part One The Curse of Knowledge Once we know something, we find it hard to imagine what it was like not to know it. Our knowledge has "cursed" us.Reversing the process is as difficult as un-ringing a bell. You can''t unlearn what you already know. There are, in fact, only two ways to beat the Curse of Knowledge reliably. The first is not to learn anything. The second is to take your ideas and transform them. --Chip Heath and Dan Heath, Made to Stick For in much wisdom is much grief; and he that increaseth knowledge increaseth sorrow.

--Ecclesiastes 1:18 Chapter One "You Cannot Escape It, in This Country" {i.} The case did not so much burst upon as creep over Burgoyne County, New York, just as the sickness that underlay it only took root in the region slowly, insidiously, and long before the first body was found. My own initial indication that at least one crime of an unusual and quite probably violent nature had been committed came in the form of a visit from Deputy Sheriff Pete Steinbrecher, in early July of that summer. I was then living, as I had been for about five years, at Shiloh, a dairy farm belonging to my spinster great-aunt, Miss Clarissa Jones. Shiloh is centered on a large Italianate farmhouse that is the sole residence in Death''s Head Hollow, one of a half-dozen valleys that lead down from the high ground of the northern Taconic Mountains into the small town of Surrender. Despite my having spent some seven or eight years working as a criminal psychologist (primarily with the New York City Police Department) prior to relocating to the pastoral severity of the Taconics, I had only occasionally interacted with what passes for local law enforcement during my time up north. Due to severe budget cuts at every level of government, there was and remains precious little law in Burgoyne County: communities like Surrender long ago lost their town constabularies, as well as their county sheriff''s substations, and what little regular patrolling the latter department can still do is focused primarily on the county seat of Fraser. The residents of the many small communities in the region have thus been left to see to their own safety, which they are happy to do: for Burgoyne County is gun country, and only in cases involving extreme disturbances are either the sheriff''s office in Fraser or the New York State Police contacted.

For these and other reasons, my main criminological efforts since relocating to my great-aunt''s farm (where I''d spent nearly every weekend and summer vacation as a boy) had been less applied than academic: I''d been establishing an online course of study in various controversial aspects of forensic science under the aegis of the State University of New York at Albany. That institution''s first-rate School of Criminal Justice had long offered a range of classes in forensics, both at the undergraduate and the graduate levels; but its senior faculty and officials, wisely taking into account the scandals that have rocked both federal and regional crime laboratories as well as the field of forensic science generally during the last twenty years, had decided, just before my own relocation to their area, to offer complementary courses that would explore the well-documented weaknesses of forensics. Mine had been one of the most outspoken voices attempting to expose those weaknesses; and because my work (and the methods that underlay them) had led to a series of widely publicized conflicts with the NYPD''s crime lab that had ultimately made me persona non grata in the metropolis where I was born, I was not altogether surprised, but was entirely grateful, when SUNY-Albany offered me the chance to help structure their balancing course of study. Partnering with my closest co-worker in New York, Mike Li--an expert in trace and DNA evidence who had spent years vociferously pointing out the widespread and often fatal flaws that marred the gathering, handling, and courtroom use of such evidence--I gladly accepted the university''s offer, provided Mike''s and my own courses could be taught online. (The lingering effects of a childhood bout with osteosarcoma on my left femur and pelvis had recently made extended travel, even the fifty miles or so to Albany and back, increasingly difficult for me.) The administrators of the School of Criminal Justice, already anxious to expand their presence in the burgeoning world of online teaching, had readily agreed to this condition; and soon Mike and I had established a virtual lecture hall inside a rickety old airplane hangar that sat on a hill behind two large green barns built in the mid-nineteenth century that were the centerpieces of the farm that my great-aunt oversaw with an iron will. To be more precise, Mike and I had built our Skype-operated classroom inside the fuselage of a pre-World War II Junkers JU-52/3m, a classic German civilian aircraft, the care and maintenance of which had been the passion of my great-aunt''s father. After piloting it from Germany to Senegal in 1935 via a circuitous European and North African route, the old lunatic had shipped the plane to Brazil and flown it north: an adventure that was apparently as colorful--and expensive--as it sounds.

But the tri-engine beast was now immobile, the ghostly occupant of nearly every inch of the large hangar; and inside it Mike and I worked to disabuse our students, first, of the widely accepted idea that forensics (not only trace and DNA collection, but such far older practices as fingerprinting and ballistics, as well) were the "gold standard" of evidentiary analysis and courtroom argument and, second, of the equally popular and pernicious notion that forensics had made criminal psychology, and especially profiling, somehow obsolete. On the afternoon in question, I had just given a long and fairly impassioned summer term lecture explaining precisely how damaging this last set of beliefs had become, asking that my students--representatives of the coming generation of criminal investigators--restore both psychology and profiling to the positions of respect that they had largely lost when the purportedly more precise areas of forensics had begun to monopolize criminal investigation in the early 1990s. Stepping away from the half-dozen large video monitors that dominated the interior of the JU-52 when I was finally finished, I then descended slowly into the hangar via a set of steel steps that my great-grandfather had built up and over the starboard wing of the plane to the forward hatch, and went outside to lean on my cane and smoke a cigarette. From there, I caught sight of Pete Steinbrecher''s patrol car moving quickly up the hollow, lights flashing but siren mute: Pete was well enough acquainted with both Shiloh and my diminutive yet fiery great-aunt to know that the sound of the siren would bring Clarissa swiftly from the farmhouse, to which she would not return until she had delivered a stern lecture to the deputy on the effects of such sounds on dairy cattle. For this and other reasons, Pete did not brave the hollow on minor errands--indeed, his presence almost certainly indicated just one thing: "Mike," I called, stepping back toward the great maw that was the open hangar door, "Pete Steinbrecher''s on his way up." I could hear Mike cut short his preparations for a seminar as I added flatly, "Looks like someone''s been murdered." In the time it took Pete to park his patrol car beside one of the milking barns below the hangar, Mike shot out of the plane and down the steel steps, his mood characteristically brightened. "Excellent!" he called as he joined me, his eyes--narrowed by years of examining often microscopic pieces of evidence--widening with enthusiasm.

"Should I cancel my next class?" He looked up at me eagerly (Mike stands about five foot six, even when excited, while I, despite my usual stooped posture, am a good half-foot taller), and grinned almost fiendishly as he accepted a cigarette from the pack I held out to him. "Not yet," I said, pulling a pocket watch from my vest and popping it open. "You''ve got a good twenty minutes--let''s hear him out, first." "Ah," Mike noised in disappointment. "How did I know you were going to say that, gweilo?" (When irritated with me, it was Mike''s custom to use the Cantonese phrase for "white devil.") "Easy, there, Yellow Peril," I answered, replacing my watch, producing a Zippo lighter, and offering its flame to my partner. "Damn it, L.T.

," Mike replied. "I''ve told you, ''Yellow Peril'' refers to the Japs--and the Chinese have a lot more fucking reasons to hate them than you do. So dibs." I turned to him, amused. " ''Dibs''?" "On hating the Japanese," Mike said, with a wave of his cigarette. "Ah," I replied with a nod; but I could not help another chuckle. " ''Dibs,'' " I murmured. "You often have a whimsical way of putting things, Michael.

" "Yeah, yeah, yeah--come on, Trajan, I''m half-crazed for a real case." "You''re always half-crazed. And we don''t know that this is a real case: he may just want advice." "Sure," Mike said dubiously, as we smoked and watched the deputy walk up a dirt pathway toward us. "Pete''s risking a nasty run-in with your aunt for advice." "Just give the man a chance to talk," I said. Pete held up a hand in greeting as he neared us, then removed his grey Stetson when he arrived to shake each of our hands. "Doc," he said to me.

"Mike. I, uh--I''m wondering if you''re in the mood to help the county out." Pete was a big man, with solid German features typical of the many waves of.