The scene shifted back to the present, to the sterile, fluorescent-lit office of Senior Detective Jae-hyun. Case files were stacked in neat piles on his desk, a monument to the slow, grinding work of an investigation. The door swung open and Han Sung-min strode in, holding a laptop and a look of focused energy.

"Senior, I have the footage from the direct CCTV on their street," he announced, setting the laptop down on a clear space. "It took some doing, but I got the last two weeks."

For the next hour, the only sounds were the whirring of the computer fan and the click-clack of the keyboard as they fast-forwarded through days of mundane suburban life. The area of the province was quiet, as Sung-min had noted; fewer people came and went than in the heart of the city.

"There's nothing uncommon or suspicious at a glance," Sung-min said, voicing their shared initial impression. "Just neighbors, delivery trucks, the family's own cars..."

But then Jae-hyun held up a hand. "Go back. The last three days. Focus on the evening, between six and eight."

Sung-min rewound. And there he was. A tall, skinny man, dressed in casual, dark clothing. He appeared on the edge of the camera's frame near the Kim family home at around 6:30 PM. He didn't approach the door directly. Instead, he would linger, sometimes checking his phone, sometimes just watching the house from a distance. He would wait for about thirty to forty-five minutes, and then, without any apparent purpose, he would leave.

"He was there the day before the murder," Sung-min said, pointing at the screen. "And the day before that. It's a pattern."

Jae-hyun's eyes were locked on the screen. "And the day of the murder?"

Sung-min navigated to the file. The time stamp read 6:28 PM. The tall, skinny man entered the frame. He performed his usual ritual of waiting. But this time, instead of leaving around 7:15, he left at 6:50 PM. He cut his usual routine short by twenty-five minutes.

"The timing of the murder matches his arrival and this new, early departure," Jae-hyun stated, his voice low and certain. The camera angle, as Sung-min had noted, didn't show the front door directly, but it showed the path leading to it. The man came as per his strange, obsessive usual. But on the day Kim Min-jun was shot to death in his own home, the man's behavior changed. He left early.

Sung-min leaned back, running a hand through his hair. "It's him. It has to be." Then he voiced the other, more complicated thread of their investigation. "And what about Selena? Her alibi is a fortress. She was live on television."

Jae-hyun didn't take his eyes off the frozen image of the tall, skinny man on the screen. "The 'what' is on that tape," he said quietly. "The 'why'... that still leads back to her. Find out who he is."