Loren ignored her husband’s quip. A congresswoman from Colorado, Loren was only too happy to escape the partisan bickering of Washington, if only for a few days. Free from the pressures of work and an intrusive media, she felt more relaxed in another country. Dressed in a skimpy two-piece bathing suit she would never wear at home, she flaunted her curvaceous but firm body, kept trim through yoga and daily runs on a treadmill.

Stretching across the boat’s bench seat, she hung a leg over the side and dipped her toes in the water. “Yikes! That water is cold. I’m going to stay warm and dry up here, thank you very much.”

“I won’t be gone long.” Her husband stuck a regulator between his teeth, stared admiringly at his wife for a moment, then fell backward into the blue Pacific. He playfully kicked a spray of water onto his wife with a fin before he disappeared under the surface.

Toweling herself off, Loren tracked her husband’s air bubbles for a few minutes, then gazed across the horizon. The afternoon air was crystal clear, the sapphire sky nearly matching the color of the ocean. They’d anchored the red speedboat a half mile off the Chilean coast, opposite a small beach called Playa Caleta Abarca.

A towering Sheraton Hotel stood on a rock cliff nearby, its outdoor pool crowded with sun-worshiping tourists. A short distance to the south lay Valparaiso, Chile’s colorful and historic seaport long known by sailors as the “Jewel of the Pacific.” Ancient buildings climbed the steep hills ringing the city, reminding Loren of San Francisco. She noted a large white cruise ship, the Sea Splendour, anchored in the bay, shuttling passengers ashore to visit the beaches of Viña del Mar or to trek to Chile’s capital city of Santiago, sixty miles southeast.

A gentle swell rocked the speedboat as Loren turned her gaze to sea. A small yellow sailboat passed by, then tacked north toward an approaching freighter, its triangular sail fluttering. She leaned back on the padded seat, closed her eyes, and luxuriated in the warmth of the sun.

Sixty feet beneath her, Dirk Pitt had just shaken the ocean’s chill that permeated the country’s coastal waters due to the Humboldt Current. His breath rate eased as he slowed his descent. The visibility was good, about forty feet, allowing him clear view of a rocky bottom anchored with thick seaweed. Kicking his fins lazily, he glided over a coral-strewn ledge crowded with brightly colored urchins and starfish. A small school of jack mackerel eyed him for a minute or two, then darted away.

The sea relaxed Pitt in a way nothing else could. To some it was confining, but Pitt found the ocean depths produced in him an odd feeling of release that seemed to heighten his senses. It was an experience born decades ago, when he spent the better part of his youth exploring the coves along the Southern Californian coastline, free diving and bodysurfing. The allure was like that of flying, which had led him to the Air Force Academy and flight school as a young officer.

But the draw of the sea enticed him to leave the flight line and a promising military career to join a newly created federal organization, the National Underwater and Marine Agency. Created to study and protect the world’s oceans, NUMA was the perfect home for Pitt, allowing him to work on and beneath the sea, all over the world. After years as its Special Projects Director, he now found himself heading the agency, which only fortified his sense of stewardship of the world’s oceans. Loren often joked that she still competed with Pitt’s first love, his mistress called the sea.

Pitt’s quest for underwater discovery, along with a love of history, had led him to discover dozens of shipwrecks. But this afternoon, the object of his search was considerably smaller. Eyeing a thick ridge of jagged rocks that stretched into deeper water, he swam over and surveyed its crevices. After several minutes, he found what he was looking for. He plunged an arm between two boulders and pulled out a spirited brown spiny lobster that weighed almost five pounds. He eyed its long, waving antennas for a moment and then stuffed the crustacean into a mesh dive bag and began a search for its twin.

Above the noisy rhythm of his regulated breathing, a faint tapping rippled through the water.

He held his breath to hear better. The metallic rapping repeated a familiar cadence—two short raps, two long raps, then two short raps. It wasn’t exactly the Morse code distress call of SOS, which used three dots and dashes, but Pitt guessed the intent was the same. He could not determine its direction, only that the source was nearby. It had to be Loren.

He kicked toward the surface, angling for the position of the speedboat. He spotted the anchor line and approached it, swimming hard, surfacing a few yards behind the boat. Loren was leaning over the transom, pounding a spare diver’s lead weight on the stern drive housing. Engrossed in her signaling, she didn’t notice him emerge.

“What’s wrong?” he shouted.

She looked up, and Pitt saw a desperate fear in her eyes. Lost for words, she simply pointed behind him. He spun his head around—and was engulfed in a massive shadow.

It was a ship, a massive bulk carrier, bearing down on them barely a hundred feet away. The speedboat bobbed in the direct path of the ship’s broad, high bow, which pushed an ominous mountain of white foamy water in front of it. Pitt cursed the fools on the bridge, who were either blind or asleep.

Without hesitation, he kicked and stroked furiously to the boat until he could reach an arm over the side.

“Should I start the motor?” Loren’s face was drawn. “I was afraid to try while you were underwater.”

Pitt saw the anchor line was still set, running up into a small locker on the bow. Behind him, he heard the deep rumble of the ship’s engines as its towering hulk advanced. It was too close. Any slip in cutting the anchor line or a delay in starting the motor and their boat would be smashed to bits, with them in it.

With the regulator back between his teeth, he shook his head at Loren and waved for her to come closer.

She hurried to the side and reached to help him aboard.

Instead he reached past her hand and hooked his arm around her waist.

Before she could react, she felt herself being jerked over the side. She yelped as her body hit the cold water. Kicking and floundering, she gasped for a last breath of air. The towering mountain of steel was now just yards away.

Then she was snatched like a rag doll and disappeared beneath the rippling surface.

5

THE FREIGHTER NEITHER SLOWED NOR TURNED. Its broad steel hull smacked into the speedboat, severing the anchor line before burying the tiny vessel in the bow’s wake. The small boat bounced along the ship’s hull and then remarkably popped to the surface, where it bobbed in the freighter’s receding wake, its port beam only slightly mangled.

Somewhere beneath the surface, Loren found herself clinging to her husband in a desperate plunge to the seafloor. Startled by the cold-water immersion, she nearly panicked when she felt Pitt yank her to the depths without air. Then she felt him force his regulator into her mouth while wedging her arm around his buoyancy compensator harness. Despite the cold, her nerves began to settle. She began to assist their progress by kicking as well, remembering to clear her ears as they descended deeper.

The shimmering light of the surface water grew dark as the black hull passed over them. Loren glanced up, feeling like she could reach out and touch the barnacle-encrusted plates only a few feet away.

Though they had escaped the mass of the hull, Pitt continued driving deeper with frantic kicks of his fins. His lungs felt like they would burst, which only made him push harder until they finally reached the seabed. Seeing a bus-sized rise of coral, he pulled Loren along its curved side. As their knees touched the hard bottom, he grabbed a nodule for leverage.