Anomaly Detection

Stab Unit / Case Files / Latrodectus

The city was a living thing at night. Rio’s lights flickered like a thousand nervous eyes, watching, waiting, never blinking.

Rusty Henderson stood at the window of the Stab Unit’s temporary command post, a rented apartment high above Copacabana, and watched the city breathe. He could feel the tension in the pit of his stomach, the way a dog senses a coming storm.

The world was changing. He could taste it in the air.

Behind him, the team was settling in.

Jan was already at the table, her laptop open, fingers moving with surgical precision. She was the best field analyst he’d ever worked with, and she knew it. Todd Kendall, her boss, was pacing, restless, his tie already loosened, his eyes scanning the room for threats that weren’t there.

Meyerbeer, the medic, was unpacking a black duffel bag, laying out syringes and trauma kits with the care of a priest preparing for mass. And then there was Canfield, the quiet one, the watcher, who never seemed to blink.

Rusty took a sip of cold coffee and tried to ignore the ache in his shoulder. The last job had left him with a souvenir - a hairline fracture and a deep, purple bruise that still throbbed when the weather changed. He’d been in this game too long, but he couldn’t walk away. Not now. Not when things were getting interesting.

Jan looked up from her screen. “We’ve got something,” she said, her voice low, serious. “It’s not a normal hit. Not cartel, not local. This one’s… different.”

Rusty turned, his eyes narrowing. “How different?”

She spun the laptop around. On the screen was a grainy video feed, timestamped two hours ago. A man - or something that looked like a man - walked through the crowd at the Maracanã stadium.

He moved wrong, like he was wearing his own skin for the first time. The camera caught a flicker, a shimmer, and for a split second, his face blurred, the features sliding out of place before snapping back.

“Jesus,” Kendall muttered, leaning in. “Not another one,” he sighed.

Jan nodded. “Just ran it through the new filter. It’s not human. Or at least, not all the way.”

Rusty felt a chill crawl up his spine. They’d been chasing traces of these things for months - following up on stories of people who weren’t people, of things that wore human faces like masks. Most of it was crap, paranoid X-Files geeks - the kind of thing you heard in bars at 3 a.m. But this… this was different.

“Where is he now?” Rusty asked.

Jan tapped a few keys. “Lost him in the crowd. But he left something behind.” She pulled up another image - a close-up of a handprint on a metal railing. The skin was blistered, the flesh beneath a sickly, iridescent blue.

Meyerbeer whistled softly. “That’s not from around here, meu.”

Rusty nodded. “Alright. We move now. Kendall, you’re with me. Jan, keep eyes on the feeds. Canfield, sweep the stadium. Meyerbeer, prep for extraction. We don’t know what we’re dealing with, so assume the worst.”

Kendall grinned, the old fire in his eyes. “Just like old times, huh?”

Rusty didn’t smile. “Probably worse.”

They moved fast, slipping through the city like ghosts. The streets were alive with music and laughter, but beneath it all was a current of fear, a sense that something was wrong. Rusty felt it in every shadow, every alleyway. The world was holding its breath.

At the stadium, the air seemed thick with the smell of sweat, urine, and spilled beer. The crowd had thinned, but there were still clusters of fans, their faces painted in the colors of teams that no longer mattered. Rusty flashed his ID, and the security guards melted away, eager to be anywhere else.

They found the handprint easily. It was still there, a perfect impression burned into the metal. Meyerbeer took a sample, his hands steady, his face unreadable.

“Nossa. Whatever did this,” he said quietly, “it’s not from any database I’ve got.”

Rusty nodded. “Keep looking.”

Jan’s voice crackled in his earpiece. “I’ve got movement. North tunnel. He’s not alone.”

Rusty signaled, and the team moved as one. They slipped into the tunnel, guns drawn, eyes sharp. The air was colder here, the lights flickering overhead. At the far end, a figure stood in the shadows, his back to them.