DR. LYSANDER CODMAN GREETED THE TROUTS IN THE LOBBY of a building that overlooked the grassy square off Longwood Avenue where Harvard Medical School was part of a campus with some of the most prestigious such institutions in the country. The professor was a tall, loose-boned man in his sixties. He had the type of long, big-toothed face that seemed to raise the possibility that some of the old Yankee families had bred with horses.

Codman led the way along a hallway and swept the Trouts into his spacious office. He asked his visitors to make themselves comfortable and poured cups of Earl Grey from an electric kettle. He then plunked himself behind his desk and asked a few questions about their work with NUMA, then held up a bound report so the Trouts could read the title on its dark blue cover:

THE NEW BEDFORD ANOMALY:

A STUDY OF IMMUNE RESPONSE AMONG

CREW FROM THE WHALING SHIP PRINCESS

Codman took a noisy slurp from his cup.

“I’ve had a chance to browse through Dr. Lee’s paper,” he said. “It’s even more curious than I remember.”

Paul asked, “Curious in what way, Professor Codman?”

“You’ll understand when you get into it. The first section of Dr. Lee’s treatise is based mostly on newspaper reports. The reporter was interviewing retired whaling men, looking to chronicle their exploits, and realized that he was onto something. He noticed that a group of whalers in their seventies and eighties had been almost completely disease free for a good part of their very long lives.”

“We were in the New Bedford Seamen’s Bethel earlier today,” Gamay said. “The walls are lined with tablets memorializing whaling crews. Paul remarked at how tough the old-timers must have been.”

“It went beyond toughness in this case,” Codman said. “These men had never suffered a single illness, not even the common cold. They died at an advanced age, usually from some geriatric condition such as congestive heart failure.”

“Newspaper writing can be overblown,” Gamay said.

“Especially in the nineteenth century,” Codman said. “But the stories caught the eye of a doctor in immunology named Fuller here at the medical school. He organized a team of physicians to investigate. They talked to the men and the physicians who had treated them. What they found was even stranger than what newspapers had reported. The men enjoying the most robust health had all served on the whaling ship Princess during a single voyage in 1848. They had been infected on that voyage with a tropical illness then making the rounds through the Pacific whaling fleet. While some of those men shipped out again later and died in whaling accidents, fourteen were still living. They were compared to men from other ships, and the statistical differences healthwise were startling. The doctors backed up their findings with tables and graphs and so on.”

“Yet you expressed doubts over Dr. Lee’s findings,” Gamay said.