Chapter 15: Conduit

The nerve pathways were fried. Jarrin said it plainly to Jazz, standing in the open mud where the afternoon sun hit his face and made the blood rush in his damaged arm feel like a slow drumbeat. Three seconds behind his own thoughts. No Jolly Roger, no more of it, not without wrecking what was left of the wiring.

Jazz's jaw tightened. She shoved the deck of cards back into her jacket with her good hand and grabbed Jarrin by the bicep of his right arm, the one still working enough to feel her fingers squeezing. She yanked him sideways toward the collapsed concrete wall, a slab that jutted out of the mud at an angle and threw a partial shadow across the water's edge. Behind it, the angle of the slab blocked the open sightline from the rest of the mudflat. They dropped behind it hard enough to scrape his knee, and Jazz was already crouching over his arm before they'd fully settled.

"You pushed too hard," she said. It wasn't a question. She peeled the sleeve of his blue Hawaiian shirt up past the elbow, and the damage laid bare itself in pale, mottled swelling. The fingers couldn't close past half a fist. When she touched the knuckles, Jarrin flinched, and the reflex arrived three seconds after his hand had already moved.

The arm was swollen to twice its normal size at the wrist. Pink, hot, stiff in every joint that didn't want to move at all. Jazz flexed the shoulder, rotated the elbow, pressed along the length of the forearm like she'd been trained on broken machinery rather than human bodies. She'd done that before, during the fight with Pryce's fragment in the east wing, when Jarrin had taken a pipe to the ribs that left him leaning against the wall for twenty minutes. This was worse, though. She'd seen this before too. Fractured, bruised, and burned through in a way that would take days or weeks to heal without intervention, if it healed at all.

"Don't summon it," she told him. "Don't try to feel for Jolly Roger. Every time you reach for it, the damaged pathways light up again. You keep pushing, the three-second delay becomes permanent, and then you lose the arm entirely."

Jarrin watched her work. He could hear the group still gathered out front, the murmur of voices and the squelch of movement across wet clay. Jazz finished stabilizing the arm with a strip torn from her own jacket lining and folded the makeshift wrap tight, then pressed her palm against the swelling to keep it from spreading further.

"Jarrin," she said, still crouching. "You're done. No more energy pulls until this calms down."

He opened his mouth to argue, but the arm throbbed and the argument died mid-breath. Instead he just nodded and leaned against the slab. The concrete was cool through his shirt.

Jazz stood, brushed mud off her fishnets, and walked out from behind the wall to address the group. The assembled figures were clustered around Velma's device and the severed arm, a loose semicircle that included Fred, Velma, Daphne, Shaggy, and Scooby. Jazz spoke loud enough that everyone heard her over the lapping water.

"My husband can't fight right now. He can't use his Stand until the damage heals, which means no bubbles, no pops, and no kinetic force. We're losing our primary offensive capability. We need to decide what that means before we do anything else."

The group absorbed that. Scooby whined. Shaggy looked like he'd been told the ocean was real. Velma tilted her device toward Jazz and asked a technical question about the neurological delay, but Jazz cut her off before she could finish.

"That's not the conversation we're having. The conversation is whether we send people into a partially submerged foundation with one fighter down, or whether we secure what we have first."

Fred stepped forward. His blueprints were still rolled under one arm, pressed tight against his chest like something he might lose if he relaxed his grip. He looked at the ruins, then at Jarrin, then back at the ruins.

"Sitting on this mudflat is a death sentence."

The group shifted. Velma turned to Fred. Daphne's face went pale.

"The energy traces are still accessible," Fred continued. "We know the mansion holds residual Stand energy embedded in its structure. Jazz's card method can pull it safely. That energy can be used to strengthen our defenses, to neutralize whatever mechanism is still running beneath this island, to give us options we don't have right now. If we wait here for Jarrin to heal, the mechanism finishes whatever cycle it's in and we lose everything."

Jazz folded her arms across her chest. "You're suggesting I walk into a flooded ruin with a group of people who can't see stands, without a single person who can punch a threat in the face."

"Fred's right," Velma said. She turned from the severed arm to look at the group. "The energy signature is active and rhythmic, which means the mechanism is still in operation. If we don't engage while the traces are accessible, we lose our window to understand how much is still left."

Jarrin leaned against the wall and listened. Fred wanted in. Velma wanted in too, mostly for scientific reasons. Daphne stood between them like a pendulum. Shaggy had already retreated to the waterline, and Scooby was sniffing the ground with his nose practically touching the mud.

"We split," Fred said. "Fred, Jazz, and whoever else volunteers go through the breach. Jazz handles the filtered pulls. The rest stay on the shore as backup and watch for anything that moves."

Jazz shook her head. "We go in without Jarrin, we go in as a single unit or we don't go at all. A group of non-combatants walking through a foundation with an active mechanism and a partially submerged layout is how bodies get added to whatever list that thing keeps."

"Then we pull Jarrin upright," Fred said. "He's still a Stand user. Even damaged, he's—"

"He's three seconds behind his own thoughts," Jazz said. "Three seconds is an eternity in a fight. You put him in front of a mechanism that fires faster than that, he dies."

Fred's jaw set. He looked like a man whose blueprints had just been proven wrong by reality, and he didn't like it. "We can't just sit here and watch the counter run. Every minute we delay, the mechanism absorbs more energy. Eventually we don't have the option of going in at all."

"And sitting on the mudflat does what?"

Fred didn't answer that.

Jarrin pushed off the wall and walked toward the arm. His damaged hand hung at his side, stiff and clumsy, the fingers folded at wrong angles that made his whole posture lean. Velma was still examining the limb. The silver lines threading through the translucent tissue no longer pulsed. They were completely still, as if someone had pulled the plug on a device that had been running on battery.

"They stopped," she said. "The energy lines went inert. Not dead, not fading, just stopped. Whatever was sending power through this arm has released it."

Fred crouched beside her. "Released?"

"It was a conduit. A delivery tube. The mechanism sent whatever it needed through the arm and then disconnected it, like pulling a straw out of a drink." Velma tilted the device closer. "The residual signal is flat. No rhythmic component. No active signature. The mechanism is no longer using this limb as a pathway."

Fred straightened and looked at the ruins. "If the mechanism detached from the arm, it redirected. The severed limb was a temporary conduit, a bridge between the foundation network and whatever external output it was trying to achieve. Now that it's detached, the energy has to have gone somewhere else."

The logic landed hard. Velma checked her device again, pointed it at the ruins, and watched the needle climb steadily toward the active end of its arc. "The dormant energy in the mansion's foundation is flowing. Active, rhythmic, consistent with Stand signature distribution. The mechanism isn't waiting for authorization anymore. It's drawing power from the harvested signatures and running on its own."

Fred stared at the water. "Then the island's collapse counter hasn't paused. It's been bypassed. The mansion's underground network is running on stolen Stand energy, self-sufficient now, no external trigger needed."

Shaggy made a noise that sat somewhere between a groan and a whimper. Scooby sneezed, which was probably the wrong response to the situation, but Scooby had never been great at reading the room.

A voice cut across the mudflat from the far edge, behind the submerged wreckage where the bayou's current had exposed a low ridge of land. Daphne was walking toward them, and behind her Shaggy moved at a pace that suggested his only goal was to put distance between himself and whatever was happening.

"Folks, I found something," Daphne said when she got close enough to be heard over the water. "Shaggy was sniffing around the far side of the wreckage, near where the bayou floor drops away. He found a tunnel entrance. Behind the collapsed section, behind the waterline. Stone steps going straight down. They're intact. Cut by hand before the whole island sank. It leads directly into the foundation."

Fred snatched the blueprints from his arm and unrolled them on the nearest piece of exposed rock. He spread them flat, pressed the edges down with his fists, and scanned them against Daphne's description. His finger moved across the paper, tracing routes, matching landmarks, comparing angles. The group gathered around him, crowding in close enough that Jazz had to step sideways to let Velma see the drawing.

"There," Fred said, pointing. "The tunnel's orientation matches the lower foundation corridor that runs from the east wing sub-basement directly to the vault. If Daphne's location is accurate, this gives us a straight shot down to the Judge's mechanism."

Velma's device was already confirming it. The dormant energy signal from the ruins intensified as she aimed it toward the far edge of the mudflat, where the tunnel entrance lay hidden behind the wreckage. "The underground network is routing through exactly that path," she said. "The energy flow aligns with the tunnel's trajectory. The mechanism is pulling power through that corridor right now."

The group stood in silence, looking at the blueprints and then at the ruins and then at the far edge of the mudflat where a tunnel mouth sat hidden behind stone and water. Fred looked like a man who had just found the map he'd been searching for, though the path it showed was narrow and dark and led directly into whatever powered the entire catastrophe.

Fred turned back to Jazz. "We go down the tunnel."

"We don't go down the tunnel," Jazz said.

"We have to. It's the shortest route to the mechanism, and the mechanism is what's powering the island's collapse. If we don't reach the vault before the energy transfer completes its cycle, we lose the only window we have to intervene."

"You're asking us to walk down into a flooded foundation with a mechanism that's already running on stolen Stand energy, with my husband unable to fight and no one else here who can see what's happening down there."

Fred pressed his hand against the blueprints. "If we stay on this mudflat, the mechanism finishes its cycle and the island drops. Either we go in now and have a chance at reaching the vault, or we wait and end up at the bottom of the bayou with nothing to show for it."

The argument turned into a tug-of-war that went nowhere, each side anchored to a position neither would release. Fred pushed for immediate descent. Jazz held firm on securing the shoreline first. Velma offered technical details that helped neither side. Daphne stood between them without a strong opinion, which was more useful than she realized. Shaggy and Scooby provided commentary that was mostly limited to Shaggy's visible dread and Scooby's inability to stop sneezing.

Jazz looked at Jarrin. He was sitting on the exposed rock, leaning against the concrete wall, his damaged arm wrapped in the strip of her own jacket. The three-second delay was visible in how he shifted his weight, how his eyes tracked movement that had already passed. The arm was swollen and useless. His Stand was dormant. His body was telling him to stop, and every instinct he had was pushing against it.

Then Jazz looked at the tunnel. Behind the ruins, hidden behind a jumble of submerged stone, the entrance yawned downward into something dark. The tunnel was a passage, cut by hands that had designed a building meant to outlast its inhabitants. Those same hands had built a foundation that was now eating Stand energy and running the island's collapse on stolen power.

Down there was the mechanism. Down there was the vault. Down there was whatever the mansion had absorbed and was now running on its own.

Sitting on this mudflat with a broken fighter and a foundation eating itself alive was how everyone ended up dead at the bottom of the bayou.

"They're going down the tunnel," Jazz said. "All of us. The moment the energy transfer completes, we lose our shot at the vault. The foundation will be fully self-sufficient, and the Judge's mechanism will be running independently of anything we can touch."

Fred exhaled like he'd been holding his breath since they first stood on this mudflat. Velma nodded slowly. Daphne straightened. Shaggy stopped looking like he might cry.

Jarrin pulled himself upright. The damaged arm throbbed with every movement, and the three-second lag made every step feel out of sync with his own body. He looked at Jazz. She had the look in her eyes. She'd already mapped the path in her head, every corner, every turn, every place a threat could emerge. The fight was already playing out behind her eyes, and he'd seen it enough times to know when the outcome was decided.

His gut agreed. Down. Down there was the mechanism, and down there was where the problem started. The rest was just geometry and timing.

Jarrin hauled himself off the rock. The mud sucked at his shoes. The tunnel entrance waited behind the ruins, dark and silent, and the group moved toward it.