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“Let’s get right to the evidence, hey?” Brambell said, his high-pitched, cheerful voice booming from numerous speakers along both sides of the hall. Beside her, Margo could feel Frock stiffen with irritation.

The huge image of a magnified bone appeared on the screen, bathing the hall and its occupants in a ghostly gray light.

“Here is a photograph of Pamela Wisher’s third cervical vertebra. Notice the dentition pattern that’s clearly visible.”

The next slide came up.

“Here is one of those tooth marks, magnified two hundred times. And here is a cross section reproduction. As you can see, the tooth is clearly mammalian.”

The next series of slides displayed results of lab tests done on a variety of bones from the two corpses, recording the pressures per square inch needed to make marks of varying depths.

“We identified twenty-one clear marks, punctures, or scratches made by teeth on the bones of the two victims,” Brambell continued. “There are also some marks that seem to come from a dull instrument: too regular for teeth, but too rough for a well-finished knife. Such as you’d see, perhaps, from a primitive ax or stone knife. These are particularly prevalent on the cervical vertebrae, perhaps indicative of the mode of decapitation. In any case, the pressure required to make the teeth marks”—Brambell indicated the results with his electronic pointer—“varied from 500 to about 900 pounds per square inch. This is considerably less than our initial estimate of 1,200 pounds per square inch.”

Less than your initial estimate, Margo thought, glancing toward Frock.

Another photograph came on the screen. “Our detailed study of thin bone sections here, around the marks, shows blood leakage through the interstitial areas of the bone and into the marrow itself. That indicates they were made pre-mortem.” There was a silence.

“In other words, the marks occurred at the time of death.” Brambell cleared his throat. “Due to the highly advanced state of decomposition, it is impossible to determine a definitive cause of death. But I think we can say with fair certainty that these victims died of massive trauma and blood loss inflicted at the time these teeth marks were made.”

He turned toward his audience dramatically. “There is, I know, a question on all of your minds. The question. What made these marks? As we know, there has been speculation in the press that the killer might be another Mbwun.”

He’s enjoying this, Margo thought. She could feel the tension building in the room. D’Agosta, in particular, was on the edge of his seat.

“We did a thorough analysis of these marks vis-à-vis those made by Mbwun eighteen months ago, which of course this Museum of all places has a great deal of data on. And we have come to two firm conclusions.”

He took a deep breath and looked around.

“One, these teeth marks are not consistent with the teeth of Mbwun. They do not match the cross section, the size, or the length.”

Margo saw D’Agosta’s shoulders relax, almost slump, with relief.

“Two, the force used to make these marks never exceeded 900 pounds per square inch, which definitely puts it squarely in the canine, or even more squarely, in the human category. Not in the Mbwun category.”

The slides were flashing by more quickly now, showing various micrographs of teeth marks and bite patterns. “A healthy, habitual gum-cracking male can exert 850 to 900 pounds per square inch of pressure with a hard bite,” Brambell said. “There is nothing inconsistent between these marks and the bite of human eyeteeth. On the other hand, it could have been, say, a pack of feral dogs roaming the tu

“There are perhaps more types of underground inhabitants, Dr. Brambell, than are dreamt of in your philosophy.”

The accent was from the deep south, perhaps Alabama or Louisiana; the laconic voice was soft, with the slightest hint of genteel cynicism. Margo turned to find the familiar lean figure of Special Agent Pendergast reclining in a seat near the top of the hall. She had neither seen nor heard him come in. He caught her glance and nodded, his pale eyes flashing in the dark. “Miss Green,” he said. “Pardon me, it’s Dr. Green now, isn’t it?”



Margo smiled and nodded in return. She hadn’t seen the FBI agent since the good-bye party in Frock’s Museum office Then again, that was the last time she had seen a lot of people involved in the Museum Beast murders: Dr. Frock, say, or Greg Kawakita.

Frock turned around in his wheelchair with an effort, nodded his recognition, then turned back toward the screen.

Brambell was looking at the new arrival. “You are—?” he began.

“Special Agent Pendergast of the FBI,” replied D’Agosta “He’ll be assisting us with this case.”

“I see,” Brambell said. “Delighted.” He turned briskly back toward the screen. “Let’s move on to the next question, the identification of the unknown body. I have some rather good news on this front. I’m afraid it may come as a surprise to my colleagues”—he nodded at Frock and Margo—“because it just recently came to my own attention.”

Frock sat forward in his wheelchair, an unreadable expression on his face.

Margo looked back and forth between the two scientists. Was it possible that Brambell had kept them in the dark or something, intending to garner the credit himself?

“Please take a close look at this next slide.” A new image appeared on the screen: the X ray showing the four white triangles that Margo had first noticed.

“Here we have four small triangles of metal embedded in the lumbar vertebrae of the unknown skeleton. We were all perplexed as to their meaning after Dr. Green here first pointed them out. Then, just last night, I had a stroke of inspiration as to their possible origin. I spent much of today in contact with orthopedic surgeons. If I am correct, we will know the identity of the murdered individual by the end of the week, perhaps sooner.”

He gri

“I assume you believe those triangles to be—” Pendergast began.

“For the time being,” Brambell interrupted pointedly, “I can say no more on the subject.” He waved the remote and a new slide flashed up, showing an extensively decomposed head, eyes missing, teeth exposed in a lipless grin. Margo was as repelled by the sight as she had been when the head was first wheeled into the lab.

“As you all know, this head was also brought to us yesterday for analysis. It was discovered by Lieutenant D’Agosta while investigating recent murders among the homeless population. Although we won’t be able to give you a full report for several more days, we know that it belongs to an indigent man who was murdered approximately two months ago. Numerous marks can be seen, some from teeth and some apparently from a crude weapon—again especially noticeable around the remaining cervical vertebrae. We’re pla

Oh no, Margo thought.

He flashed several more slides. “We studied the excoriation of the neck and concluded that, again, the force used was most consistent with a human attacker, certainly not Mbwun.”

The screen flashed to white, and Brambell placed the pointing remote on a table next to him. As the lights came up, D’Agosta rose from his seat. “That’s a bigger relief than you’ll ever know,” he said. “But let me get this straight. You’re saying that a person made those bite marks?”

Brambell nodded.

“Not a dog or some other animal that might be living down in the sewers?”

“Given the nature and condition of the marks, it’s hard to rule out a dog completely. But it’s my belief that a human, or perhaps several humans, fit the bill better. If we had even one clear dentition pattern we would know, but, alas…” He spread his hands. “And if certain of those marks turn out to be made by a rough weapon of some sort, then a dog would obviously be out of the question.”