Chapter 4: The Room at the End of the Corridor

She told herself she wasn't looking for anything. She was looking for a spare charger—which was true—and the wing at the end of the east corridor was the only part of Château Verrine she hadn't been shown—which was also true. The fact that both things could be true and still add up to something she'd later have to call snooping was a piece of math she chose not to do until it was too late to matter.

The door wasn't locked. That, more than anything, should have warned her. A house like this locked everything that mattered, and a door left open was either an accident or a message.

It had been a nursery once, from the height of the old wallpaper and the shape of the crown molding. What was there instead was a single low couch, worn soft in a way nothing else in this house was allowed to be worn, and against the far wall, three armchairs set close enough together that their arms nearly touched.

And photographs. Dozens of them pinned across a corkboard. Three boys asleep in a single bed too small for even two of them. Three teenagers with their arms slung over each other's shoulders. And more recent ones—closer together, arranged with a deliberate intimacy that made her stomach clench.

But it was the wall behind the corkboard that made her blood run cold.

She noticed it because one of the photographs had fallen, revealing a small, dark circle drilled into the plaster. A camera lens. No—not a lens. A microphone. She stepped closer, her heart hammering, and saw that it wasn't alone. There were three of them. One behind the corkboard. One behind the armchairs. One directly above the couch.

Someone had been listening to this room for a very long time.

She was still staring at the third microphone when she heard the footsteps.

Not one set. Three.

They came from three different directions—Caspian from the stairs, Theo from the corridor she'd come down, James, impossibly, already leaning in the doorway she was certain had been empty a second ago—and they arrived at almost the same moment.

Nobody said anything for what felt like a very long time.

"This isn't what it looks like," Theo said finally, and then winced.

"I don't know what it looks like," Mathilde said, which was a lie. "I was looking for a charger."

"You weren't," Caspian said.

She turned and pointed at the wall. At the microphones. At the evidence of surveillance that had clearly been there for years.

"What is that?"

The three of them exchanged a look—the held-breath stillness she'd caught at dinner that first night. Except this time, it didn't scatter. This time it held.

"Nobody comes in here," James said quietly. "Not staff. Not our father. Nobody."

"Then who installed the microphones, James?" Her voice was shaking. "Because someone did. Someone's been listening to this room for a long time."

Caspian crossed the room slowly. He reached behind the corkboard and pulled out the first microphone, turning it over in his hands. His expression was unreadable.

"These aren't ours," he said quietly. "We didn't put these here."

"Then who did?"

He looked at his brothers. Theo had gone pale. James's jaw was tight enough to crack.

"Our father," Caspian said. "Or someone working for him."

The room tilted. Mathilde grabbed the edge of the couch to steady herself. "Your father has been spying on you?"

"For years, apparently." Caspian's voice was flat, but there was something dangerous underneath it. "He built this house. He knows every corner of it. And he's never trusted anyone—not even his own sons."

"So the room," Mathilde said slowly. "The photographs. The armchairs. This whole—" she gestured at the corkboard, the couch, the impossible intimacy of the space, "—this wasn't just about deciding to share me. It was about hiding from him."

"Yes," James said. "And now he knows."

The silence that followed was the silence of a fuse being lit.

Then Caspian's phone buzzed. Once. Sharp and loud.

He glanced down at it, and his face went from calculated to cold in a single breath. He turned the screen toward his brothers. Mathilde caught a glimpse of a name: Vivienne. And beneath it, a message that made her blood run cold.

"I'm at the gates. Come out. We need to talk about the girl in the east wing."

The silence that followed was different. It wasn't the held-breath stillness of a shared secret. It was the silence of a trap being sprung.

"How does she know?" Theo whispered, his usual ease completely gone. "How does she know Mathilde is in the east wing?"

Caspian didn't answer. He was already looking at James, and James was looking at the corkboard. At the microphones. At the precise arrangement of a room that was supposed to be a secret.

"Someone told her," James said quietly. "Someone in this house."

"Or someone in this room," Caspian said, and his eyes swept over his brothers with a sudden, terrifying coldness.

"Get her out," James said, his voice hard. "Now. Before Vivienne gets inside. Take the servant's stairs. Don't let anyone see you."

Caspian grabbed Mathilde's arm—not gently, not this time—and pulled her toward the door.

"Wait." She dug her heels in. "If your father's been listening, he already knows everything. About the room. About us. About—"

"He doesn't know everything." Caspian's voice was a low, urgent command. "He doesn't know what we decided. He doesn't know what we're planning. And if we're going to keep it that way, you need to move. Now."

He pulled her into the corridor. She looked back one last time. James was still standing in the center of the room, staring at the photographs. And Theo—Theo was watching her leave with an expression she couldn't read. Something caught between guilt and hunger and a terrible, quiet kind of grief.

They made it three steps down the servant's stairs before the lights went out.

Not the whole house. Just the corridor. Just the stairwell. Just them.

Mathilde froze. Caspian's hand tightened on her arm.

"Don't move," he breathed.

From somewhere below them—somewhere in the dark—came the sound of a door opening. Then footsteps. Slow. Deliberate. Climbing toward them.

And then a voice. A woman's voice. Cool. Precise. Familiar.

"I know you're up there, Caspian. I know she's with you. And I know about the room." A pause. "Come down. Or I'll burn it. All of it. The photographs. The journal. Everything."

Caspian's grip on Mathilde's arm went slack.

Vivienne.

"Mathilde," Caspian whispered, his voice barely audible in the dark. "Run. Now. Don't look back."