Chapter 2 - The Second Lock

The metallic echo of the deadbolt sliding home vibrated through the floorboards, silencing Sarah instantly. She froze, her hand still caught in Mark’s grip. The apartment was dead silent again, save for the hum of the refrigerator down the hall.
"Did you... did you just lock that?" Sarah whispered, her previous defiance evaporating into thin air as she stared at the white door.
"I didn't touch it," Mark said, his voice barely audible. He released her arm and pointed the smartphone beam directly at the brass keyhole. The heavy brass cylinder had clearly shifted, rotating a full ninety degrees. Yet neither of them had moved toward the lock, and the spare key had remained hanging on the kitchen hook all night.
Buster let out a low, mournful whine, pressing his nose even harder against the narrow gap at the bottom of the door.
"Someone is inside," Sarah breathed, her fingers clutching the sleeve of Mark’s grey t-shirt. "Mark... someone is in the guest room."
"No," Mark said slowly, tracking the alignment of the frame. "Look at the doorframe. There are no hinges on this side. The hinges are on the inside. That means this door opens inward, toward us. But look at the gap at the bottom—it’s sealed with heavy rubber weather-stripping. You can't even slide a piece of paper under there."
"Then how did we smell the earth?" Sarah asked, her eyes wide with a sudden, dawning terror. "And how did the deadbolt turn by itself?"
"I don't know," Mark muttered. He knelt down again, bringing the light level with the gap. The dust motes swirling near the wood suddenly stopped, drawn inward as if the room beyond was breathing. A faint, low hum—like a distant electrical transformer—began to vibrate against his eardrums.
"We need to call the police," Sarah said, reaching into the pocket of her sweatpants for her phone. "Right now. This isn't a landlord dispute. This is trespassing."
"Wait," Mark commanded, holding up a hand. "Look at the dust."
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Sarah leaned down, squinting into the bright LED beam. The dust particles weren't just floating; they were being sucked in a steady, directional stream toward a tiny pinprick hole drilled directly through the center of the wooden panel, right at dog-eye level. Someone on the other side was looking out.
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