I was telling Vander we needed to find out why and when Petersen was printed in the past, if he had a criminal record, when Marino walked in.

"Your secretary said you was up here," he announced by way of a greeting.

He was eating a doughnut I recognized as having come from the box by the coffee machine downstairs. Rose always brought in doughnuts on Monday mornings. Glancing around at the hardware, he casually shoved a manila envelope my way. "Sorry, Neils," he mumbled. "But the Doc here says she's got first dibs."

Vander looked curiously at me as I opened the envelope. Inside was a plastic evidence bag containing Petersen's tenprint card. Marino had put me on the spot, and I didn't appreciate it. The card, under ordinary circumstances, should have been receipted directly to the fingerprints lab - not to me. It is this very sort of maneuver that creates animosity on the part of one's colleagues.

They assume you're violating their turf, assume you're preempting them when, in truth, you may be doing nothing of the sort.

I explained to Vander, "I didn't want this left on your desk, out in the open where it might be handled. Matt Petersen supposedly was using greasepaint before he came home. If there was a residue on his hands, it may also be on his card."

Vander's eyes widened. The thought appealed to him. "Sure. We'll run it under the laser."

Marino was staring sullenly at me.

I asked him, "What about the survival knife?"

He produced another envelope from the stack wedged between his elbow and waist.

"Was on my way to take it to Frank." Vander suggested, "We'll take a look at it with the laser first."

Then he printed out another hard copy of NIC 112, the latents that Matt Petersen had left on his wife's body, and presented it to Marino.

He studied it briefly, muttering, "Ho-ly shit," and he looked up straight at me.

His eyes smiled in triumph. I was familiar with the look, which I had expected. It said, "So there, Ms. Chief: So maybe you got book-learning, but me, I know the street."

I could feel the investigative screws tightening on the husband of a woman who I still believed was slain by a man not known to any of us.

Fifteen minutes later, Vander, Marino and I were inside what was the equivalent of a darkroom adjoining the fingerprint lab. On a countertop near a large sink were the ten-print card and the survival knife. The room was pitch-black. Marino's big belly was unpleasantly brushing my left elbow as the dazzling pulses ignited a scattering of sparkles on the inky smudges of the card. In addition, there were sparkles on the handle of the knife, which was hard rubber and too coarse for prints.

On the knife's wide shiny blade was a smattering of virtually microscopic debris and several distinct partial prints that Vander dusted and lifted. He leaned closer to the ten-print card. A quick visual comparison with his eagle, expert eye was enough for him to tentatively say, "Based on an initial ridge comparison, they're his, the prints on the blade are Petersen's."

The laser went off, throwing us into complete blackness, and presently we were squinting in the rude glare of overhead lights that had suddenly returned us to the world of dreary cinder block and white Formica.

Pushing back my goggles, I began the litany of objective reminders as Vander fooled around with the laser and Marino lit a cigarette.

"The prints on the knife may not mean anything. If the knife belonged to Petersen, you'd expect to find his prints. As for the sparkling residue - yes, it's obvious he had something on his hands when he touched his wife's body and when he was fingerprinted. But we can't be sure the substance is the same as the glitter found elsewhere, particularly in the first three strangling cases. We'll give scanning electron microscopy a shot at it, hopefully determine if the elemental compositions or infrared spectrums are the same as those in the residues found on other areas of her body and in the previous cases."

"What?" Marino asked, incredulously. "You thinking Matt had one thing on his hands and the killer had something else, and they ain't the same but both look the same under the laser?"

"Almost everything that reacts strongly to the laser looks the same," I told him in slow, measured words. "It glows like white neon light."

"Yeah, but most people don't have white neon crap on their hands, to my knowledge."

I had to agree. "Most people don't."

"Sort of a weird little coincidence Matt just happens to have the stuff on his hands, whatever it is."

"You mentioned he'd just come home from a dress rehearsal," I reminded him.

"That's his story."

"It might not be a bad idea to collect the makeup he was using Friday night and bring it in for testing."

Marino stared disdainfully at me.

In my office was one of the few personal computers on the second floor. It was connected to the main computer down the hall, but it wasn't a dumb terminal. Even if the main computer was down, I could use my PC for word processing if nothing else.

Marino handed over the two diskettes found on the desk inside the Petersen bedroom. I slipped them into the drives and executed a directory command for each one.

An index of files, or chapters, of what clearly was Matt Petersen's dissertation appeared on the screen. The subject was Tennessee Williams, "whose most successful plays reveal a frustrating world in which sex and violence lie beneath the surface of romantic gentility," read the opening paragraph of the Introduction.

Marino was peering over my shoulder shaking his head.

"Jeez," he muttered, "this is only getting better. No wonder the squirrel freaked when I told him we was taking these disks in. Look at this stuff."

I rolled down the screen.

Flashing past were Williams's controversial treatments of homosexuality and cannibalism. There were references to the brutish Stanley Kowalski and to the castrated gigolo in Sweet Bird of Youth. I didn't need clairvoyant powers to read Marino's mind, which was as banal as the front page of a tabloid. To him, this was the stuff of garden-variety porn, the fuel of the psychopathic minds that feed on fantasies of sexual aberrancies and violence. Marino wouldn't know the difference between the street and the stage if he were pistol-whipped with a Drama 101 course.

The people like Williams, and even Matt Petersen, who create such scenarios rarely are the individuals who go around living them.

I looked levelly at Marino. "What would you think if Peterson were an Old Testament scholar?"

He shrugged, his eyes shifting away from me, glancing back at the screen. "Hey. This ain't exactly Sunday school material."

"Neither are rapes, stonings, beheadings and whores. And in real life, Truman Capote wasn't a mass murderer, Sergeant."

He backed away from the computer and went to a chair. I swiveled around, facing him across the wide expanse of my desk. Ordinarily, when he stopped by my office he preferred to stand, to remain on his feet towering over me. But he was sitting, and we were eye to eye. I decided he was planning to stay awhile.

"How about seeing if you can print out this thing? You mind? Looks like good bedtime reading."

He smiled snidely. "Who knows? Like, maybe this American lit freak quotes the Marquis Sade - what's-his-face in there, too."

"The Marquis de Sade was French."

"Whatever."

I restrained my irritation. I was wondering what would happen if one of my medical examiner's wives were murdered. Would Marino look in the library and think he'd struck pay dirt when he found volume after volume on forensics and perverse crimes in history? His eyes narrowed as he lit another cigarette and took a big drag. He waited until he'd blown out a thin stream of smoke before saying, "You've apparently got a high opinion of Petersen. What's it based on? The fact he's an artist or just that he's a hotshot college kid?"