The sound grew louder, closer.

Trying desperately not to vomit again, Robert gripped the side of his chair and watched with wide eyes as they rapidly approached the glowing ocean floor. "What in God's name are you doing?"

Connelly stabbed a finger out. "There!" She was pointing to a rocky outcrop, which appeared to hide a large cave. "I saw it while we were spinning."

"We don't know what's in there," Robert said, making no effort to conceal his worry.

"Would you prefer the alternative?"

The clicking grew louder, like tribal war drums.

Robert looked back over his shoulder at a blimp-sized shadow closing in on their position. "Go! Go! Go!"

Dodging the glowing coral, swaying plants and darting sea creatures that lit up the ocean floor like Christmas tree bulbs, Connelly steered straight for the cave. Robert chanced a second glance back. Blackness consumed the view. At first he thought the creature had given up, but then he realized he was starring into the dark void of the beast's throat.

The world suddenly grew bright and brown as the sphere was swallowed by the cave. As the creature pulled up and away from the ocean floor, its body churned water into the cave, surging the sphere forward, down into the hollow. Connelly struggled to regain control, but it was the walls of the cave that ultimately stopped them. A high pitched screech of metal on stone echoed through the sphere. Then they were stopped.

Robert searched for any signs of danger, but saw only brown stone. He felt some comfort at seeing the stone. It looked like any cave you might see on earth. Just water and stone. Robert let his muscles loosen. "Well, we survived." Robert noticed that Connelly did not look relieved. "What?"

"I didn't stop the sphere," Connelly said.

"So?"

Connelly pushed the controls forward and backward. A light crackling sound rang through the sphere, but it didn't budge. "We're stuck."

Robert no longer felt safe, and he became suddenly aware of how foul his own vomit smelled. He imagined asphyxiating to death in this foul smelling air and shuddered. He cast a sympathetic glance toward Connelly. "Sorry I threw up."

CHAPTER 20 -- HELP.

The tension in Willard's back felt as though a vice grip was attached to his shoulder blades, pulling them closer together with every passing minute. All his attempts to communicate with Connelly and Robert had gone unanswered. Since the moment the sphere had disconnected from the cable, he had been plagued with worry. And without any indication of what had happened, any action on his part would be foolish. Even though his heart screamed out the opposite, if Connelly and Robert were already dead, risking his own life in a totally unknown environment was not an option. With them gone, he was the next in line for taking charge of TES and he would make damn sure it was used in a way Connelly would see fit. He could do that much for them, at least.

During the time he had spent waiting for some signal from the sphere, Willard had prepared for every contingency. Extra air tanks lay on the TES platform. A personal propulsion unit, for single person underwater movement, was unpacked and ready to go. Assorted extra gear, emergency supplies and lights littered the TES platform next to the hole in the ice.

Normally, Willard hoped to never have to use any emergency equipment. On a good mission, his expertise was never needed. But now, after all this time waiting, he would be happy with a worst case scenario. Anything!

He got his wish three minutes later. "...onnelly to Willard...you read? Over."

Willard snapped to attention, standing quickly from his sitting position against the TES control panel. The motion of his quick stand send him a few feet into the air. He landed, balanced himself on the control panel and near shouted, "Kathy? Is that you?"

"...ank God. Willard, we're in...ave...stuck."

Willard glanced at the TES cable, hoping to see it taut with the weight of an attached sphere. But it gently ebbed back and forth in the water, signifying that the sphere was still water bound. "Your signal is weak, say again?"

"...old on...bert is boosting...OK, how's this? Can you hear me?" Connelly's voice came through loud and clear.

"Boss, where the hell are you two?"

"In a cave system...we're safe for now."

Willard could hear the nervousness in Connelly's voice. He had learned to recognize it, because it didn't show that often and when it did.... Willard took a deep breath. "Tell me the bad news."

There was a pause on the other end. "Listen. We were...something chased us into the cave. We didn't have any other option."

The vice on Willard's back screwed tighter. "And?"

"And we're stuck."

Willard new he had his worst case scenario. Two crew members were stuck in a cave at the bottom of an alien ocean hidden by miles of ice. And he hadn't missed the part about being chased into the cave. "What can you tell me about the something that chased you?"

"It was gargantuan!" Robert's voice came onto the line. "It dwarfed any and all Earthly creatures, prehistoric or current. Bigger than the blue whale and not nearly as docile."

Willard slowly rotated his head on his shoulders. He was beginning to run through a mental check list of everything he needed to do before taking action. "OK...anything else you want to tell me?"

"Yeah," Connelly said, her voice grim and cold, "We're running out of air."

Willard ran through his mental checklist.

Ice...water...high pressure...cold...giant killer predators...low air...and they're stuck...in a cave. Willard ran to the supplies he'd gathered and realized he'd need just about all of it. Great. "Connelly, activate your tracking beacon."

"Why?" The question was laced with suspicion.

"Just do it."

"You're not coming down here." It wasn't a question.

"The hell I'm not."

"I'm telling you, you're not."

"Look Connelly, you know as well as I do, when there is an emergency situation, I outrank you. I'm the boss. I'm in charge. You do what I say, dammit, and I say turn on the fucking beacon!" Willard felt some of the tension release from his back.

Dead silence followed.

Willard ignored the silence and began collecting the gear and attaching it to his suit. He felt thankful for Europa's low gravity. He could never carry all this gear back on Earth. And once he entered the water, he'd be weightless.

"Tracking beacon activated," Connelly finally said.

Willard didn't respond. He walked to the edge of the TES hole and looked at the placid water below.

Connelly's voice returned. "Ethan...be careful."

"I always am," Willard replied. He then leapt over the edge and into the alien waters.

The ATV's headlights glared over the Europhid field, setting them ablaze with blood red shimmers. Choi had kept a careful vigil on the field, waiting for it to repeat its movement, hoping to observe the organisms' mode of locomotion. But nothing moved. Other the gentle sway of the Europhids, nothing budged.

Choi's impatience grew as she sat alone facing the field. She had yet to receive a check in from anyone. The fact that the entire TES crew and Harris had yet to check-in probably meant that something was interfering with the com signals. Most likely a solar storm being pulled through the system by Jupiter's gravity or increased radiation levels from Jupiter itself. Either way, she decided not to worry herself over it.

Throughout her career with the CDC, Choi hadn't been known for her patience. It was part of what made her such a lethal instrument when dealing with infectious diseases. She would persist, beating down every door until a solution was obtained. Sometimes each door opened would reveal part of the puzzle, a hint towards a solution. It was that same persistence-an overwhelming determination-that controlled her now.

She thought on the problems at hand and compartmentalized them in her mind.

First and foremost was her responsibility in handling the situation with Peterson. She was still unsure how the material injected into Peterson's system would affect him. She cursed herself again for leaving, but the truth was, she needed to be on the surface. She needed to understand the Europhids before she could determine their goal.

She knew the others would scoff at her assessment, that the Europhids had a goal, but it was a fact that every living thing, from humans to microbes, had goals. Some people longed to be painters. Elephants on the other hand, lived to eat. It is a simple rule of nature that she often faced when dealing with the microscopic world. The goal of a virus was to multiply and destroy.

Everything in nature acted towards goals. The question now was simple, yet a profound mystery; what do the Europhids want? How does injecting Peterson propel them towards their goal? And if the attack on Peterson was simply a case of mistaken identity, what else lived on the surface that required the Europhids to evolve stingers?

The muscles on the back of Choi's neck tingled and brought her attention back to the Europhids. Were they watching her? She turned around and saw nothing but the ice fields of Europa, covered with crags and spires. Nothing was there. She considered again that something else might dwell on the surface, something that the Europhids needed a defense against. Perhaps the stinger had a use after all?

All the speculation began to wear on Choi's nerves. Without testing, without evidence or new data, all the guesswork in the world wouldn't get her any closer to the answers she sought. She needed to take action.

Choi looked down at her suit, remembering its impregnable capabilities. If Peterson had been wearing a PMS at the time, the Europhid's stinger would have never pierced his hand. Choi stepped toward the Europhid field and stretched her legs.

Time to test a theory.

If all the Europhids had the stinging ability and used it as a defense mechanism, they would defend themselves if attacked. Of course, she realized the flaw in her logic; they had been harvesting the Europhids without incident. But they had been transplanting the samples, not killing them. Choi lined up with one of the largest specimens at the border of the field. She remembered her childhood, playing soccer with her brothers. She could kick better than all three of them. She wondered if she still had the magic touch.

She was about to find out.

Bounding forward, Choi reached the Europhids in two long strides. She swung her leg forward and connected solidly with the large Europhid. The impact was both soft and solid. She could feel the outer layers of the Europhid tearing as her foot severed its flesh. As her kick followed through, Choi saw the Europhid tumble up and float away like a football toward the goal posts-oozing red fluid. It soared nearly one hundred feet before landing in a dense portion of the field.

Choi bent down to the ruined Europhid. Nothing had attacked her during the assault, and as she waved her hand over the site, the Europhids remained motionless. Not one of them showed signs of aggression. "Huh..."

Choi stood up and prepared to kick a second Europhid. She thought a repeat attack might put them more on the defensive. Her muscles tensed as she took her first step forward.

A looming shadow arched across her path for just an instant, but it was enough to make Choi flinch and stumble. She fell to the ice, landing only inches away from the field. Her head pounded as her heart pumped hard. Her subconscious shouted at her consciousness: you are not alone!

Choi climbed to her feet, darting her eyes in every direction, searching for the source of the shadow. She realized that the shadow had been cast by the light of the ATV, meaning that whatever created it had passed between her and the vehicle, which was only feet away.

Wishing she could hear, but knowing it was impossible in the vacuum of space, Choi had to rely on her eyes to warn her of danger. She felt entirely underprepared. Sweat beaded on her forehead and rolled into her eyes, stinging them. She blinked to relieve the pain, unable to wipe her eyes through her facemask.

A shadow hovering behind a nearby spire of ice caught her attention. The shape looked darker than the view of space behind. It was absorbing the ambient starlight. Choi's mind struggled to comprehend what she was seeing. Was there really something there? Or was this an illusion exaggerated by her theories of other surface dwelling creatures?

Just before Choi dismissed the shadow as nothing, it moved.

She became rigid, focusing her eyes on the ice spire. She didn't know if she should move or not. Was she in danger? Would the creature attack? Choi had no idea. Alien creatures larger than a microbe were not within her field of expertise.

The black shape moved again, this time shifting forward. Choi eased herself toward the ATV. If she had to flee, she wanted to do it fast, not bumbling on her feet. She knew she'd make an easy target to anything accustomed to low gravity. Choi slid on to the seat and gripped the ignition key, ready to speed away at a moment's notice.

The creature inched forward. It stood on two feet, but appeared hunched and its movements were jerky, strange. Choi struggled to see into the dark and noted that the creature also had two arms. It was humanoid...a completely unrealistic evolutionary adaptation, Choi realized.

This was not a local.

Then who?

She didn't have to wait long for an answer.

The figure stepped into the light. Choi saw the face of Peterson staring back at her through his PMS mask. She couldn't read the expression on his face; it made no sense, like a newborn baby attempting to figure out how to use its facial muscles. And his eyes. They were blood red.

Choi's apprehension didn't fade at the sight of her crewmate. She realized that his presence here was completely unsanctioned by Harris, which meant something had gone very wrong on the Surveyor.

Suddenly, Peterson stood up very straight and smiled wide. "I saw you kick that Europhid," he said, shaking his head. "That wasn't a very nice thing to do."

Cold bit at Willard's body. He was covered by a layer of thermal underwear, a jumpsuit and the PMS, but it wasn't the temperature making him cold. Temperature-wise, the water was warmer than the gripping cold of space. It was the stark loneliness he felt. As a child he had often wondered what it would be like to fall down a bottomless pit. He'd seen several cartoon characters suffer the fate, but could never quite capture what it might feel like-an endless fall.

The barren walls of ice that surrounded Willard as he swam straight down through the TES hole held little interest. He was sure Robert and Connelly had discussed the different layers, which passed every few feet, marked by a slight change in ice color. But to him, this was a boring and lonely descent.

Not for long, he thought.

Willard wasn't the type to get nervous before taking action. He normally jumped right in and felt at home. But this trek through the deep, unable to see anything beyond the thirty feet his waterproof headlamp could reach... If the propulsion pack on his back wasn't speeding him along, he knew that he might die of starvation before reaching the open ocean. Though he made sure to keep his speed reasonable, too fast and he might lose control and careen into the ice wall.

A black hole appeared below. He could see nothing beyond it.

The cave walls disappeared as he plummeted into the open ocean. Willard came to a complete stop, hovering in space, attempting to get a bearing on his location. Looking up, Willard noticed the gentle waves of ice in the ceiling. Beautiful. But other than that, the water was too cloudy to see anything at all. How did Connelly and Robert see where they were going? Willard wondered, and how did they see anything alive in this milk?

He thought back to his communications with Connelly while he was topside. What was it she had him do? Switch off the lights? It was worth a try. He would never find them with such poor visibility.

Willard turned off his headlamp and was plunged into a deep, weightless, darkness.

Willard's eyes slowly adjusted to the darkness. He could make out the faint impressions of the glowing world around him. His mouth opened as he saw what had lured Connelly and Robert away from the sphere cable. "Wow..."

A surge of water passed by, causing Willard to spin in place. His gear stretched out away from his waist like a dancer's skirt. When he came to a complete stop he realized that something had just swam past him-close enough for its wake to send him spinning.

Willard gripped the controls of his propulsion pack and prepared to launch himself towards the ocean floor. He couldn't make it out fully, but whatever had passed appeared to be the size of a skyscraper and was quickly turning around. Its dark shape was silhouetted by the slightly brighter waters. As the beast reared around, Willard saw a wiggling creature floating above its head...a parasite?

Click, click, click.

Willard shouted in agony as sound pounded through the water and bounced off his body. Willard's eyes burst open. He was concealed in the water. With no light to give away his position, he was invisible to the naked eyes. But something had tipped this creature off to his whereabouts...and now it knew exactly where to strike.

Willard felt a wave of displaced water suddenly push on him. The creature was charging! As Willard throttled the propulsion pack to full speed, he thought, this must be the same creature that chased Connelly. Is it waiting for them? Or is this its normal stomping ground?

Shooting straight down, Willard was sure that a creature of that size wouldn't be agile enough to make the turn and follow him. He turned back to look and was pleased when he saw nothing there-just the black, black water. He turned forward again and saw the glowing ocean floor. He smiled as he noticed it was alive with living creatures and plants.

Confusion gripped Willard's mind as he attempted to comprehend what he saw next. From above and below, massive spikes closed in, blocking his view of the bottom. As the walls closed in, the darkness around him grew more intense.

Click, click, click.