Postmortem
and stared into the CRT display.
    He added, "Could be he was printed for some other reason. If he's in law enforcement, or maybe applied for a taxi license once."
    He began calling up fingerprint cards from the depths of image retrieval. Instantly, the search-print image, an enlarged aggregation of loops and whorls in turquoise blue, was juxtaposed to the candidate-print image. To the right was a column listing the sex, race, date of birth and other information revealing the can didate's identification. Producing a hard copy of the prints, he handed it over.
    I studied it, read and reread the identity of NIC112.
    Marino would be thrilled.
    According to the computer, and there could be no mistake about it, the latents the laser picked up on Lori Petersen's shoulder were left by Matt Petersen, her husband.

    Chapter 4
    I was not unduly surprised that Matt Petersen touched her body. Often it is a reflex to touch someone who appears dead, to feel for a pulse or to grip a shoulder lightly the way one does to wake up the person. What dismayed me were two things. First, the latents were picked up because the individual who left them had a residue of the perplexing sparkles on his fingers - evidence also found in the previous strangling cases. Second, Matt Petersen's ten-print card had not been turned in to the lab yet. The only reason the computer got a hit was he already had prints on file with the data base.
    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

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