Read Chapter 8: First Patrol

The tunnel smelled like rust and old stone, with a faint chemical bite that made Mack's nose itch. Jax moved ahead of him with the easy confidence of a man who'd walked these passages a thousand times, his headlamp cutting a pale cone through the darkness.

"You're quiet," Jax said over his shoulder. "Most new keepers ask a hundred questions on their first patrol."

Mack adjusted the strap of his tool bag. "I'm saving them for when they matter."

Jax laughed, a short bark that echoed down the shaft. "Smart. The Warden told me you've got your father's instincts. Didn't believe him until now."

The mention of his father tightened something in Mack's chest. He kept his voice level. "You knew him?"

"Worked with him a few times before—" Jax stopped, and Mack heard the awkward pause. Before he was murdered. "He was good at this. The water routes especially. Had a feel for the pressure points."

They came to a junction where the tunnel split three ways. Jax didn't hesitate, taking the left passage where the walls grew rougher, more ancient. The brickwork here wasn't the uniform red of the modern subway system—it was darker, almost black, fitted with a precision that didn't match any construction Mack had seen.

"These tunnels predate the subway by centuries," Jax said, as if reading his thoughts. "The city built on top without knowing what was underneath."

"What exactly is underneath?"

Jax stopped at an iron door set into the wall. It was covered in markings similar to the ones Mack had seen in the hidden station, spirals and intersecting lines that seemed to shift in the lamplight. "That's the question, isn't it? Depends who you ask."

He pulled the door open, revealing a narrow chamber beyond. Inside, a massive mechanism dominated the space—brass gears and copper pipes arranged in a configuration that made Mack's repairman brain itch with curiosity. Water dripped somewhere below, steady as a heartbeat.

"This is a regulator station," Jax said, stepping inside. "Controls water flow through this entire sector. If it fails, everything above floods—basements, tunnels, the whole east side drainage system."

Mack moved closer, studying the mechanism. The gears were worn but still turning, driven by some force he couldn't identify. There was no motor, no obvious power source. But he felt it—a low vibration that hummed through the floor and up through his boots.

"The amber energy," he said. "It powers this?"

Jax nodded, his face unreadable in the dim light. "You're sharper than most. The Current runs through everything down here. It's the lifeblood of the network."

"The Current." Mack remembered Elena's words about the Society trading secrets with physical mass. "That's what flows through the Deep Lines?"

"It's what built them." Jax ran his hand along a pipe, almost reverently. "The original keepers—the ones who found this network centuries ago—they discovered something that had been here long before any city existed. An energy source that could carry more than electricity. Information. Memory. The weight of human knowledge."

Mack thought of the crate the raiders had tried to steal, the way it had hummed with that same amber glow. "Secrets travel through it."

"Secrets ARE carried by it. The Current gives form to knowledge. Makes it tangible." Jax moved to the far side of the mechanism, where a series of valves were arranged in a spiral pattern. "This is what we're here to do. Reset the flow every few weeks to keep the regulator functioning."

He gestured for Mack to approach. "Your father was one of the few who could calibrate these by feel alone. The Warden hopes you've got the same gift."

Mack stepped closer, studying the valves. They were marked with symbols he didn't recognize, but something about them felt familiar. Like a puzzle he'd solved before in a dream. He reached out and touched the first valve, feeling the vibration change slightly under his fingers.

"Too much pressure on that one," he said automatically, surprised by his own words.

Jax's eyebrows rose. "How do you know that?"

"I don't—" Mack shook his head. "I just felt it. The hum is wrong. Like it's straining."

Jax was quiet for a long moment. Then he reached up and unclasped something from around his neck, holding it out to Mack. A badge, similar to the one Elena had given him—but older, worn smooth at the edges, the metal darkened with age.

Mack froze. It was the same design as his father's badge. The one hidden in the toolbox.

"Where did you get that?"

"It belonged to my father too." Jax's voice was careful, measured. "He was a keeper. Died thirty years ago, on a patrol not far from here."

Mack stared at the badge. "How?"

"The same way your father died, most likely. He found something he shouldn't have." Jax tucked the badge back under his shirt. "The Warden wanted me to show you this. To prove that we're all connected down here. That the work matters, even when it costs everything."

Mack felt the weight of the assumption settling on him. "Is that supposed to make me trust you?"

"It's supposed to make you understand." Jax turned back to the valves, adjusting one with practiced precision. "Your father was trying to change how things work down here. Some people thought that was dangerous. I'm not saying they were right. But I'm not saying they were wrong either."

"Elena said my father's way was better. That the secrets should be shared."

"Elena's young. She sees the world in clean lines." Jax's voice carried a weary edge. "The Current is dangerous if it's not controlled. Knowledge has weight—too much at once can crush the person carrying it. You saw what happened to that thief."

Mack remembered the man's body crumpling, the sheer impossibility of a hidden burden pulling him to the ground. "You heard about that."

"I was the one who cleaned up the body."

The words hung in the air. Mack wasn't sure what to say. He turned back to the mechanism, studying the valves. Now that Jax had adjusted one, he could feel the vibration evening out. Smoothing.

"There," he said, pointing to a third valve. "That one's next."

Jax gave him a long look, then nodded. "Go on."

Mack hesitated, then reached out. His fingers found the valve's grip, and he felt something pass through him—a current of understanding that was almost physical. He turned it slightly, not too much, and felt the whole mechanism settle into balance.

When he pulled his hand back, his fingers tingled. The amber light in the fixtures around them seemed brighter, steadier.

Jax watched him with an expression Mack couldn't read. "You're going to be trouble," he said finally. "Just like your father."

"What does that mean?"

"It means you feel the Current like he did." Jax turned away, heading toward the door. "It means the network is going to start paying attention to you. And that's not always a good thing."

Mack followed him into the tunnel, the vibration of the regulator humming behind them. "What attacked the raiders back there? Elena said they were monsters."

"Shades," Jax said. "The network rejects waste and corruption—anything that disturbs its natural flow. When the Current builds up in the wrong place, it takes shape. Hungry form. They usually stay in the deep tunnels, away from maintained routes."

"Usually."

Jax stopped walking. His headlamp cast long shadows across his face. "I've seen more of them in the past year than in the previous decade combined. Something's stirring the Current. Agitating it." He looked at Mack, and for the first time, Mack saw something like fear in the older man's eyes. "Whatever your father was planning to release—it's already starting to leak."

Before Mack could respond, a sound filtered through the darkness. A low, wet scraping, like something dragging itself across stone.

Jax's hand went to his belt. "Speak of the devil."

The shadow at the end of the tunnel peeled itself from the wall. It had no definite shape—just darkness given form, flowing and shifting as it moved toward them. But Mack could feel the weight coming off it. The pressure of something vast and terrible, pressing against the air.

Like a current. A bad one. About to break.

"Run," Jax said. "Now."