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"A code," Kelly explained with a smile. "Had I asked about his baby boy instead of girl, he'd have known I was being held hostage and shot you dead before alerting the other three guards."
"Did you grow up in this environment?"
Kelly laughed. "Oh my heavens, no. There was no need for security when I was a little girl. My mother died when I was ten, and because of Dad's long hours and dedication to his work, he thought it best if I move to the city and live with my aunt. So I grew up on the sidewalks of New York."
Kelly stopped the Jaguar in a circular drive in front of a large two-story Colonial house with tall columns around the front porch. Leaving the car, Pitt followed her up the steps to a large double door carved with the images of Vikings.
"What's the significance?"
"Nothing enigmatic. Dad loved to study Viking history. It was only one of his many passions besides his work." She held up a key but punched the doorbell. "I could let myself in, but I'd rather alert Josh."
In half a minute, a bald-headed man in his early sixties opened the door. He was wearing a vest with a striped shirt and bow tie. The remaining hair was gray, and he had the limpid blue eyes of someone who was constantly lost in thought. He wore a neatly clipped gray mustache beneath a long, rounded nose, reddened by a constant supply of alcohol.
At seeing Kelly, he broke into a wide smile, stepped forward, and swept her in his arms. "Kelly, how wonderful to see you." Then he rased her back and his face clouded with sorrow. "I'm so sorry about Elmore. It must have been horrible seeing him die."
"Thank you, Josh," said Kelly quietly. "I know what a shock it must have been for you."
"I never expected him to go, not that way. My greatest fear was they would do him mortal harm."
Pitt made a mental note to ask Josh Thomas who they were. He reached out and shook the offered hand as Kelly introduced them. The grip was not as firm as Pitt would have liked. But Thomas seemed like an affable man.
"Happy to meet you. Kelly told me a great deal about you over the phone. Thank you for saving her life, not once but twice."
"I'm only sorry I couldn't have helped Dr. Egan, too."
Thomas's face reflected agonized grief, and he put his arm around Kelly's shoulders. "And Mary. What a wonderful lady. Why would anybody want to kill her?"
"She is a great loss for us both," Kelly said grievously.
"Kelly has told me you were very close to her father," said Pitt, trying to get off the subject of death.
Thomas motioned them inside. "Yes, yes, Elmore and I worked together off and on for more than forty years. He was the smartest man I've ever known. He'd have given Einstein and Tesla a run for their money. Mary was brilliant in her own right. If she hadn't loved flying so much, she might have been a first-rate scientist."
Thomas led them into the comfortable living room decorated with Victorian furniture and offered them a glass of wine. He returned in a few minutes with a tray, holding a bottle of Chardonnay and three glasses. "I feel odd, entertaining Kelly in her own house."
"It will be a while before the estate is settled," said Kelly. "In the meantime, consider it your home." She held up her glass. "Cheers."
Pitt stared at the wine inside the glass as he spoke. "Tell me, Mr. Thomas, what was Dr. Egan working on when he died?"
Thomas looked at Kelly, who nodded. "His big project was the design and development of a proficient and reliable magnetohydrody-namic engine." He paused and looked Pitt in the eye. "Kelly tells me you're a marine engineer with NUMA."
"Yes, that's right." Pitt had a vague feeling that Thomas was shielding something.
"Then she's told you Dr. Egan was on the Emerald Dolphin's maiden voyage because the engines he created and whose construction he supervised were mounted in the cruise ship."
"Kelly made me aware of it. But what I would like to know is what Dr. Egan's contribution was. Magnetohydrodynamic engines have been in the experimental state for twenty years. The Japanese built a ship using the same propulsion principles."
"True, but it was not efficient. The ship was slow and never became commercially efficient. Amazingly, Elmore created a successful source of power that would revolutionize the field of maritime propulsion. He designed the engines almost from scratch in a little over two years. An
amazing achievement, considering that he worked alone. The research and development should have taken over a decade, but he built a working model in less than five months. Elmore's experimental units went far beyond any MHD technology. They were self-sustaining."
"I explained to Dirk how Dad's engines were able to use seawater as a source for fuel, which created the energy source to pump the water through thrusters," said Kelly.
"As revolutionary as the idea was," Thomas continued, "the first engines did not function properly and would burn out from the extremely high rate of friction buildup. I went to work with Elmore to solve the problem. Between us, we came up with a new formula for oil that would not break down under extreme heat and friction. This threw open the door for engines that could operate indefinitely without breaking down."
"So the two of you developed a super oil," said Pitt.
"Yes, you could call it that."
