Catfish picked up his shoes. “We gots to go.”

Estelle didn’t even think of protesting. “Yes. Now.”

She thought about the huge shadows that kept appearing under the waves in her paintings. She grabbed Catfish’s shoes, jumped off the rock, and started down the beach to the stairs that led up to a bluff where Catfish’s station wagon waited. “Come on.”

“I’m comin‘.” Catfish spidered down the rock and stepped after her.

At the car, both of them winded and leaning on the fenders, Catfish was digging in his pocket for the keys when they heard the roar. The roar of a thousand phlegmy lions—equal amounts of wetness, fury, and volume. Estelle felt her ribs vibrate with the noise.

“Jesus! What was that?”

“Get in the car, girl.”

Estelle climbed into the station wagon. Catfish was already fumbling the key into the ignition. The car fired up and he threw it into drive, kicking up gravel as he pulled away.

“Wait, your shoes are on the roof.”

“He can have them,” Catfish said. “They better than the ones he ate last time.”

“He? What the hell was that? You know what that was?”

“I’ll tell you soon as I’m done havin this heart attack.”

The great Sea Beast paused in his pursuit of the delicious radioactive aroma and sent a subsonic message out to a gray whale passing several miles ahead of him. Roughly translated, it said, “Hey, baby, how’s about you and I eat a few plankton and do the wild thing.”

The gray whale continued her relentless swim south and replied with a subsonic thrum that translated, “I know who you are. Stay away from me.”

The Sea Beast swam on. During his journey he had eaten a basking shark, a few dolphins, and several hundred tuna. His focus had changed from food to sex. As he approached the California coast, the radioactive scent began to diminish to almost nothing. The leak at the power plant had been discovered and fixed. He found himself less than a mile offshore with a belly full of shark—and no memory of why he’d left his volcanic nest. But there was a buzz reaching his predator’s senses from shore, the listless re-solve of prey that has given up: depression. Warm-blooded food, dolphins, and whales sent off the same signal sometimes. A large school of food was just asking to be eaten, right near the edge of the sea. He stopped out past the surf line and came to the surface in the middle of a kelp bed, his massive head breaking though strands of kelp like a zombie pickup truck breaking sod as it rises from the grave.

Then he heard it. A hated sound. The sound of an enemy. It had been half a century since the Sea Beast had left the water, and land was not his natural domain, but his instinct to attack overwhelmed his sense of self-preservation. He threw back his head, shaking the great purple gills that stood out on his neck like trees, and blew the water from his vestigial lungs. Breath burned down his cavernous throat for the first time in fifty years and came out in a horrendous roar of pain and anger. Three of the protective ocular membranes slid back from his eyes like electric car windows. allow-ing him to see in the bitter air. He thrashed his tail, pumped his great webbed feet, and torpedoed toward the shore.

It had been almost ten years since Gabe Fenton had dissected a dog, but now, at three o’clock in the morning, he was thinking seriously about taking a scalpel to Skinner, his three-year-old Labrador retriever, who was deep in the throes of a psychotic barking fit. Skinner had been banished to the porch that afternoon, after he had taken a roll in a dead seagull and refused to go into the surf or get near the hose to be washed off. To Skinner, dead bird was the smell of romance.

Gabe crawled out of bed and padded to the door in his boxers, scooping up a hiking boot along the way. He was a biologist, held a Ph.D. in animal behavior from Stanford, so it was with great academic credibility that he opened the door and winged the boot at his dog, following it with the behavior-reinforcing command of: “Skinner, shut the fuck up!”

Skinner paused in his barking fit long enough to duck under the flying

L. L. Bean, then, true to his breeding, retrieved it from the washbasin that he used as a water dish and brought it back to the doorway where Gabe stood. Skinner set the soggy boot at the biologist’s feet. Gabe closed the door in Skinner’s face.

Jealous, Skinner thought. No wonder he can’t get any females, smelling like fabric softener and soap. The Food Guy wouldn’t be so cranky if he’d get out and sniff some butts. (Skinner always thought of Gabe as “the Food Guy.”) Then, after a quick sniff to confirm that he was, indeed, the Don Juan of all dogs, Skinner resumed his barking fit. Doesn’t he get it, Skinner thought, there’s something dangerous coming. Danger, Food Guy, danger!

Inside, Gabe Fenton glanced at the computer screen in his living room as he returned to bed. A thousand tiny green dots were working their way, en masse, across the map of the Pine Cove area. He stopped and rubbed his eyes. It wasn’t possible.

Gabe went to the computer and typed in a command. The map of the area reappeared in wider scale. Still, the dots were all moving in a line. He zoomed the map to only a few square miles, the dots were still on the move. Each green dot on the map represented a rat that Gabe had live-trapped, injected with a microchip, and released into the wild. Their location was tracked and plotted by satellite. Every rat in a ten-square-mile area was moving east, away from the coast. Rats did not behave that way.

Gabe ran the data backward, looking at the rodents’ movements over the last few hours. The exodus had started abruptly, only two hours ago, and already most of the rats had moved over a mile inland. They were running full-tilt and going far beyond their normal range. Rats are sprinters, not long-distance runners. Something was up.

Gabe hit a key and a tiny green number appeared next to each of the dots. Each chip was unique, and each rat could be identified like airplanes on the screen of an air traffic controller. Rat 363 hadn’t moved outside of a two-meter range for five days. Gabe had assumed that she had either given birth or was ill. Now 363 was half a mile from her normal territory.

Anomalies are both the bane and bread of researchers. Gabe was excited by the data, but at the same time it made him anxious. An anomaly like this could lead to a discovery, or make him look like a total fool. He cross-checked the data three different ways, then tapped into the weather station on the roof. Nothing was happening in the way of weather, all changes in barometric pressure, humidity, wind, and temperature were well within normal ranges. He looked out the window: a low fog was settling on the shore, totally normal. He could just make out the lighthouse a hundred yards away. It had been shut down for twenty years, used only as a weather station and as a base for biological research.

He grabbed a blanket off of his bed and wrapped it around his shoulders against the chill, then returned to his desk. The green dots were still moving. He dialed the number for JPL in Pasadena. Skinner was still barking outside.

“Skinner, shut the fuck up!” Gabe shouted just as the automated answering service put him through to the seismology lab. A woman answered. She sounded young, probably an intern. “Excuse me?” she said.

“Sorry, I was yelling at my dog. Yes, hello, this is Dr. Gabe Fenton at the research station in Pine Cove, just wondering if you have any seismic activity in my area.”

“Pine Cove? Can I get a longitude and latitude?”

Gabe gave it to her. “I think I’m looking for something offshore.”

“Nothing. Minor tremor centered at Parkfield yesterday at 9 A.M. Point zero-five-three. You wouldn’t even be able to feel it. Have you picked something up on your instruments?”