Crimson Shore

And this little bone was just the sort of puzzle she liked. Absolutely no information had come in with it — not even identification that it was human. She had no idea who needed the analysis or why. Only that Howard Kress, chairman of Harvard’s Department of Human Evolutionary Biology and her boss, had personally brought her the bone and said, in mysterious terms, that if he could have a complete and total analysis by the morning after next, he would consider it the greatest personal favor.

She had all the equipment and machines she needed at her disposal and she’d gone right to work. Identifying the bone as the right distal phalanx of a human index finger had been easy. From there the questions grew deeper and harder to answer. She always felt as if the bones she studied were whispering to her, eager to tell their stories. Now she had the story of this little bone — or at least, all that she could coax from it in thirty hours.

As Ganesh hunched over her computer, preparing to type up the preliminary report, she had a strange feeling of something behind her, the almost psychic pressure of a person’s gaze on her back. She turned and gasped: a tall, pale man with a striking face stood in the doorway.

“Dr. Ganesh? I’m so sorry to disturb you. The name is Pendergast. I am the one interested in the finger bone.”

She put her hand on her chest. “You gave me such a start.”

“May I take a seat?”

When she hesitated, he reached into his jacket pocket, removed the shield of a special agent with the Federal Bureau of Investigation.

“Please,” she said, indicating a chair. “But how did you get in here? The museum’s closed.”

“Someone must have left a door unlocked. Now, if you don’t mind, could we chat about the bone?”

“I was just writing up the results.”

The man waved his hand. “I’d much rather hear it from you directly. I’m in something of a hurry.”

“All right.” She paused, recovering from her surprise, collecting her thoughts, determining where to start. “First of all, the size and robustness of the bone suggests a male. Someone with big, strong hands. The muscle attachments were so pronounced that I can say with confidence this person performed daily work, hard manual work, involving grasping and holding.”

“Interesting.”

“The distal end of the bone was severely abraded at the time of death. It seems the man literally scratched or clawed his finger to the bone. I’ve never seen anything like it, and I’m at a loss to explain.”

The pale man sat in silence for a moment. Then he spoke. “The gentleman in question was walled up alive.”

Ganesh leaned forward. “Really?”

A nod.

“So this is a murder investigation?”

“Of an antique sort.”

“I see.” She cleared her throat. “The bone was well preserved and had plenty of collagen. I did a radiocarbon date on the sample. It’s fairly recent, relatively speaking. Because of that the age was a little hard to measure, but it appears to date back one hundred forty years, plus or minus twenty.”

“And there’s no way to narrow the margin of error, I understand.”

“That’s correct. Radiocarbon dating works best on artifacts between five hundred and fifty thousand years old. The error bars get longer at both ends.”

“Did you use beta counting or mass spectrometry?”

Ganesh was amused by this. Here was a man trying to show off his knowledge, but he knew just enough to ask a dumb question. “With such a recent date, only accelerator mass spectrometry would give a usable result.”

“I see.”

And now she wondered if, rather than being dumb, maybe he had been testing her. What a strange and compelling man this was. “With the abundance of collagen and the lack of contamination, I did manage to get some really good DNA results. The individual is definitely male, with seventy-five percent African ancestry, the other twenty-five percent western European.”

“Curious.”

“This is a typical mix for African Americans, almost all of whom have a proportion of European ancestry. He would have had a dark but probably not black skin color.”

“And his age?”

“A histological examination indicated an age of around forty. It also showed he was in excellent health, aside from several short but severe bouts of an illness when he was young. Thin sections I studied indicate the illness might well have been scurvy — a severe vitamin C deficiency.”

“The fellow was a sailor, then?”

“The evidence points that way. The same isotope analysis showed a diet high in fish, shellfish, wheat, and barley.”

“How can you tell that?”

“The food you eat and the water you drink get broken down and the carbon, oxygen, and nitrogen become incorporated into your bones. Those three elements have various stable isotope ratios, which differ from food to food — and from water sources. Based on the ratios of those isotopes, we can tell what a person was eating and drinking during, say, the last twenty years of his or her life.”

“Drinking?”

“Yes. As you go higher in latitude, the ratio of oxygen isotopes in freshwater changes.”