A/N: Hey, guys. Huge thanks to katichresis for beta reading this chapter for me. I also want to thank Frea and Joel for the support, and Catrogue for helping me expend the CAT Squad's musical career. :) All remaining mistakes are mine. I didn't think I'd be updating today, but it's actually kind of timely. How about a monster for Halloween?

Chapter 4: Meet the Fringe Division

Agent Dunham, FBI agent, was kind of a badass. Sarah and Zondra rapidly found out as much.

Of course, they'd met her right after the agent had shot a hyper muscular giant monster, which had looked very much like it wanted to devour Sarah and Zondra at the time—or at anytime, really.

So it wasn't much of a surprise.

While the blonde agent had introduced herself and had made it very clear that the two pop stars should do exactly what she said if they wanted to survive—though she'd been very nice about it—the monster had vanished. Or rather, it had fled the scene, judging by the trail of blue substance it had left behind.

Sarah assumed it was blood, but maybe there was a more accurate word. Oh, for singing out loud, Sarah realized after wondering about the right terminology for a few seconds, she'd spent way too much time with Chuck and his best friend. Next she'll be asking Zondra and Agent Dunham about sandwiches. "Blood" would have to do.

Agent Dunham was currently following the creature's blood trail to inside the main theater hall, and had asked the two singers to stay on her heels. It was so strange, it kind of felt like being a camera crew following a cop around for a documentary—or Sarah would imagine. The FBI agent's movements were precise. They looked deadly too.

As its shining personality had proved before, both in the basement and outside, the monster was equipped with high brutality—but luckily, not high intelligence. When it decided to step out of hiding next to the stage and make its attack, Agent Dunham was ready for it.

The monster shattered a few seats as it hurtled towards them, the pieces flying around.

As far as Sarah could tell, the FBI agent didn't even blink. She shot the monster multiple times the way she had done before. It was relentless. Blue blood spattered around as the creature barked in atrocious pain with every bullet.

But it kept going—that was its brutal side.

Agent Dunham didn't back down. She grabbed a huge piece of theater seat on the floor, and hit the creature with it. The object fragmented into a million pieces at the blow. Then, the blonde kicked the monster hard in its belly. This gave her enough time to reload her gun. And she shot the creature again, and again, and again.

Until it fell, stopped moving, and died.

Yeah, Agent Dunham was totally badass.

The agent's shoulders loosened, and she cleared her throat, huffing. "You okay?"

"Y-yeah," Zondra replied.

"What was it?" Sarah asked. "Is it dead-dead?" Chuck liked zombie movies, among (many) others. It wasn't helping Sarah, right at this moment, to think about the walking dead.

"It's dead," Agent Dunham said with confidence. "And, you don't want to know."

Then, three things happened in rapid succession.

First, people with guns blasted through the door. Second, someone shouted, "Freeze! Fringe Division! Hands up!" Third, people with guns were all around them.

Agent Dunham didn't look impressed, though just like Sarah and Zondra she heaved her hands in front of her.

"Dunham?" a woman with long, dark red hair asked. "What are you doing here?"

Sarah froze. Not that she'd been moving a lot, what with the people and the guns. What the heck was going on? This woman looked exactly like Agent Dunham—it wasn't just a resemblance, they were twin-alike.

She didn't have the formal look one could expect on an agent, based on TV and movies knowledge, which Sarah had arguably a limited knowledge of anyway, so what did she know? The woman's hair was tucked in her black leather jacket, which was short enough to let her belt in appearance, and covered a red t-shirt. Her dark grey pants were tucked in her boots, and some kind of ID card was hanging over her right pocket.

"Oh, hey," Agent Dunham said. "There's been another universe breach."

Universe?

"Third time in a month," a man approaching said. He had short blonde hair, and his gun was already back on his holster around his right thigh. His beige pants, too, were tucked in his boots, and a black t-shirt was left apparent by his open jacket. "Agent Dunham," he greeted with nods, "ma'am."

Sarah, like Zondra, nodded back, but stayed silent. This was so surreal.

"Captain Lee," Agent Dunham said.

"Civilians?" her twin asked, and put her gun away.

Agent Dunham inclined her head positively. "Not from here, they were taken by the breach, and then attacked by…" She pointed her thumb over her shoulder in direction of the monster.

Captain Lee and Agent Dunham's redheaded twin grimaced, as another agent with brown hair and a slight scar on his left cheek—Sarah didn't want to know whether he got it fighting another monster—approached. Agent Dunham greeted him as Agent Francis before carrying on, "You'll want to direct your team underground; the creature came from the basement backstage."

Captain Lee glanced at Agent Francis, who nodded and left with an "On it" and a hand lifting to his ear on what looked like a strange earbud device.

"It looks different," Agent Dunham's look-alike said, studying the monster lying on the ground.

"Whoever is doing this seems to be experimenting," Agent Dunham said. "That was Walter's theory to explain why the first two creatures weren't identical either."

"What does he say about the breach?" Captain Lee asked.

"He doesn't know yet." Agent Dunham lifted her arms in the air, shrugging. "Something to do with physics."

"Figures," her twin replied, before exchanging a look with Captain Lee, who seemed to share her amusement. "You got here fast. You were already on the scene?"

"Yeah," Agent Dunham said. "We were at a concert. This place's still in use at home."

Home?

The twin—Red Dunham—gave Sarah and Zondra a look over. Out of context, they must be looking ridiculous, Sarah in her ripped golden dress and Zondra in her leather suit, and Sarah wasn't sure the agent had recognized them considering her question about their civilian status.

"I blame Peter," Blonde Dunham kept on. "I let slip once that I was a CAT Squad fan, and he drags me to their reunion concert."

"At least it was for charity," Zondra said, a hint of offense in her tone.

People around them had bestirred themselves away as soon as Agent Dunham had been identified, and they had mostly disappeared from the main hall after Agent Francis' departure. They were circulating around, obviously knowing what they were doing, and Sarah supposed setting what TV cops called a perimeter.

"Where's Carina?" Captain Lee asked.

So he did know who they were.

The Dunham twins turned to him, lifting an eyebrow in a motion that was spookily similar.

"What?" he said. "She's always been my favorite. No offense."

"None taken," Zondra replied, before muttering to Sarah, "something tells me he's got it bad for redheads."

Sarah smiled. She'd noticed it too. "Amy and Carina weren't with us when it happened," she told him.

Captain Lee looked surprised. "Wait, Amy's still in the band?"

Sarah frowned. "Why wouldn't she be?"

"She got kicked out of the band years ago here," Captain Lee said. Sarah had no idea what it meant—what was "here"?—but her stomach tightened nonetheless. "Press said that she leaked some songs to another band manager or something."

"Augusto Gaez?" Sarah asked. The name left a sour taste in her mouth, and she heard Zondra growl.

"I couldn't tell you," Captain Lee said.

"That bitch!"

The agents were taken aback by Zondra's outburst for a second, but now wasn't exactly the time to settle the old differences of a dissolved pop girl band.

"So what's the plan?" Red Dunham asked.

"I crossed over to make sure Ms. Rizzo and Ms. Walker were safe, once we were told they were missing," Blonde Dunham said. "With the previous incidents, we opted not to take any chances."

"Well," Captain Lee said with a smile, "you caught it first."

"Walter should already be working on a portal from our side, since I can only cross over alone," Blonde Dunham went on, "and we'll be out of your way."

A portal?

Sarah felt like she was in one of those movies or TV shows Chuck watched. At least, there weren't any space cowboys. Or robots that looked human—wait, maybe the Dunham twins were, what were they called, Cylons? They seemed too nice for that. Sarah decided the next movie she and Chuck watched would be a lame, uneventful romantic comedy.

"Why not just take the bridge?" Red Dunham asked.

"Too long," Blonde Dunham said. "We didn't have time for authorization and cutting red tape." She paused for a second, slightly tilting her head as if pondering something. "And I think Walter wanted to test his new toy."

It seemed that Captain Lee and Red Dunham found the logic reasonable—while Sarah was only perplexed—because they only nodded. Captain Lee gave some instructions around to what Sarah had figured by now was his team, checking up with Agent Francis as well, and turned to Red Dunham. "I'll stay to inspect the body. You go with Agent Dunham. Standard protocol applies for our findings?" he asked Blonde Dunham.

"Yes," she replied. "Goodbye, Captain Lee." She turned to her twin. "The room where Walter's setting up the portal's that way." She jerked her head. "If you'll follow us," she told Sarah and Zondra, before starting walking alongside her redheaded look-alike.

Sarah and Zondra said their goodbyes and followed.

"Chuck's gonna love this," Sarah said with a shake of her head.

"Why?" Zondra asked.

"First a monster, now a portal..."

"Ugh," Zondra said in disgust, "don't tell me you got yourself a nerd, Walker?"

Sarah only smiled and they kept walking. "It probably isn't real, anyway, right?"

"Right," Zondra said. "Being stuck in a basement with you would likely result in insanity."

Sarah chuckled and bumped her shoulder against Zondra's.

They arrived back in the room where everything had started. The opening on the floor was larger than before. The monster must have ripped off more floor when it had come out.

Red Dunham lifted some kind of science-fiction-y device in the air. "Woo, Walter must be ecstatic."

Who the heck was this Walter?

Blonde Dunham confirmed. Around, from what Sarah could tell, people who looked more like scientists, or these CSI guys, than agents now came to inspect the room and the basement. The FBI agent assured Sarah and Zondra it wouldn't take too long, and they waited, the two twins chitchatting together at first, but soon the CATs joined in.

It turned out that Olivia, as the redhead had insisted on being called, was a CAT Squad fan as well. She had said that Lincoln should never know, and Sarah assumed she was talking about Captain Lee. After a while, the four women had relived the entire career of the band, from their first single Sex on the Beach to their last CAT's PJs. Except that apparently, Red Olivia's band had become a trio after the incident with Amy and Gaez, instead of separating. They had released two more albums, and were working on a new one to be out the next year. Sarah and Bryce Larkin had therefore never duetted on We'll always have Omaha or Mr. & Mrs. Anderson, and the single that had launched Sarah's solo career, Rocky Road Dreams, had never been released.

For the umpteenth time, Sarah wondered just how bad she must have banged her head in her fall. Everything that had happened so far was utterly insane. Now, they were chatting with two Fringe Division agents who looked identical and had the exact same name, one from the FBI and the other from the Department of Defense of a place which apparently was not in the same universe, in the wait for a portal to appear apparently out of thin air. Oh no, Walter was setting the portal up. Sure, that made more sense.

What made even less sense was that after a little while, a portal did appear.

"Your ride's here," Red Olivia said.

Sarah's only source of relief was to see her distraught reflected perfectly on Zondra's face.

It looked like a window into something. The view was befogged, like when you look right above a radiator in winter and the heat is blurring the air. But Sarah could still see something on the other side. She was pretty sure she recognized Chuck too.

"It's going to tingle a little," Blonde Olivia said, "but you'll be fine, I promise."

So, after sharing a look, Sarah and Zondra swapped hands with Red Olivia—a little sadly too, because the woman was nice and fun and sort of adorable—and they followed Blonde Olivia through the portal.