Общий звук

“A man woke up at 3 AM because he heard footsteps in his hallway. He thought it was a thief, so he checked the security camera on his phone. The hallway was empty… but something moved in the corner. When he zoomed in, he saw a dark figure slowly walking toward his bedroom door. Then suddenly… the footsteps stopped. A notification appeared on his phone: ‘Motion detected… inside your room.’”