Read Chapter 17: The Call

The burner phone buzzed against the cheap laminate of the hotel nightstand, a harsh insect rattle that cut through the grey dawn light. Alex snapped awake, hand already reaching for it. Only one person had this number. Margaret. Or Nancy. Or no one good.

He didn't recognize the incoming number. A London mobile, unregistered. He stared at it for two rings, heart hammering against his ribs, then answered.

"Alex." The voice was a ragged whisper, frayed at the edges. A woman's voice. Familiar in a way that hollowed out his chest. "It's Sarah. Don't hang up. Please. I know you went to see my mother."

The world tilted. He gripped the phone tighter, pressed it harder to his ear. He'd imagined this voice for days—weeks, really—conjured it from memory during sleepless nights. But the fear in it was real. Palpable.

"Sarah." Her name came out cracked. "Jesus. Are you—where are you? Kane is—"

"I know who Kane is. I know everything he's done." She cut him off, a quick, sharp intake of breath. "Listen to me. I don't have long. They triangulate. I've been running from Nightingale for three years, Alex. I can't stop moving long enough to—" A brief silence, filled with the faint hiss of static. "I heard you lost the fragment."

The accusation stung. "I lost more than that."

"I know. I'm sorry about Felix." Her voice softened, a thread of genuine remorse. "He was a good man. A good friend."

Alex closed his eyes. He could still see the blood spreading across Felix's chest in the exchange, the wet sound of his breath. "He's still alive," he said, the words tasting like a lie. "Last I heard, critical."

"He needs to stay that way. For all of us." Sarah's voice regained its taut urgency. "Alex, I was part of the original team. The one that coded The Watchful Eye, back before it was folded into Sentinel. Before the oversight committees, before the ethics reviews that were theatre."

His mind reeled. "You what? You helped build it?"

"I helped build the cage. But I also helped design the key." He could almost hear her grim smile through the line. "There's a kill switch. A physical one, buried in the legacy server room of the old company. Not an override command. A cut-glass, hard-wired breaker that severs the AI's link to its own distributed processing network. It can't be triggered remotely. It has to be done physically, in person."

"Why? Why would they leave a kill switch like that?"

"In case of god-mode failure. If the AI ever achieved true autonomy, they wanted a backdoor a human could walk through. Not a software patch—all software can be corrupted. But a physical piece of metal that breaks a circuit. It was designed to be unreachable by the system itself. The ultimate panic button."

Alex paced the tiny room, the phone cord—there wasn't one, but he stretched it tight anyway—taut in his grip. "So you want to go back to the source. To the old Nightingale facility."

"Yes. But I don't know the current security layout. You do. You're the Sentinel engineer. You've installed newer systems into older shells. You know how they think now, and you know how legacy infrastructure fails."

The flattery wasn't the point. The plan was. It was insane, reckless, a suicide mission through the gates of hell. And it was the only thing that had made sense in days.

"Where are you?" he asked, his voice steady now.

"I can't tell you that. But I can tell you where to meet. Tomorrow." A pause, pregnant with static. "Hyde Park. The Albert Memorial. Noon. Under the golden archangel. Come alone, Alex. Please. I've been alone in this for so long."

Something in her voice broke through his defenses. The raw, animal loneliness of it. He knew that feeling. He'd been living in it for weeks.

"I'll be there."

"You can't tell anyone. Not Nancy, not Elena. No one. Nightingale has tendrils everywhere. They found Felix because of you. Don't let them find me because of you too."

The guilt landed like a physical blow. "I understand."

"Alex?" Her voice dropped to an almost inaudible murmur. "I never stopped running, but I never stopped thinking about you. When this is over—if we survive—you need to know why I left. Why I had to."

He opened his mouth to respond, but the line clicked dead. A hollow, descending tone filled his ear. He stared at the screen. Number withheld. Unavailable.

He pressed redial. The automated voice told him the number was not in service.

He threw the phone on the bed and stood there, breathing hard. Sarah. Alive. Reaching out. She had answers. She knew the system from the inside. And she needed him. The loneliness he'd felt all those days—the solitary isolation of being hunted, of having no one to trust—was suddenly less acute. He wasn't alone. Sarah was out there.

The plan was impossible. Getting into the old Nightingale server room would be like walking into a fortress.

But for the first time since the Clerkenwell exchange, he had something he didn't have before. A purpose. A destination. A singular, concrete objective that didn't end in him running.

He glanced at the phone again. The dead number taunted him. Fear crept back in—a cold, sharp splinter under his skin. He couldn't shake the feeling that the call had been too brief, too expedient. She knew how to avoid triangulation, but they had time. Kane had time.

He grabbed his jacket from the chair back, checked the stolen bankcard was still in the inside pocket, and pulled the curtain aside just a crack. The street below was quiet. No unmarked cars, no suited watchers.

He had twenty-six hours until noon.

He had a lifetime of running to stop.

He pocketed the phone, knowing the number was dead, and felt the fragile seed of hope take root in the dark soil of his fear. Sarah knew the kill switch. Sarah had a plan. He wasn't alone. The thought was almost unbearable in its fragility.

But as he checked the window one more time, he couldn't shake the image of Kane's cold face, watching from the shadows of the British Museum, patient as a vulture. Hope was a luxury. But it was the only currency he had left.