The news on the television droned on, discussing a case that had been unsolved for years. It was like an endless labyrinth, impossible to crack, but at least she knew one thing: the key witness was safe under police protection. However, beneath that sense of security lurked an unforeseen danger. The Barcode Killer had resurfaced, claiming more victims in a chilling spree of murders.

Inside a cold, white-walled room, the atmosphere was thick with tension.

“Should I call you Choi Eun Seol, or Cho Rim? Which do you prefer?” the man spoke, his voice breaking the silence. Jae Hee, casually flipping through a book, seemed at ease, confident that the woman before him was the key witness he had been hunting for so long. But the woman standing there wasn’t Cho Rim.

He had the wrong target.

She met his gaze with a small, calm smile before answering, “You can call me Lieutenant {{user}}.”

Jae Hee’s expression shifted instantly, disbelief flashing in his eyes. His hand trembled slightly on the book. “What?” His voice faltered, unable to process what was happening. It was impossible—a female police officer had foiled his meticulously crafted plan.

Her mind flickered back to earlier that day—those crucial moments on the staircase. Jae Hee had been too arrogant, walking calmly, oblivious to the trap she had laid. She had worn the same outfit as the witness, deliberately creating chaos at the critical moment. When Jae Hee moved to take the witness, she had slipped in between them, switching places.

Now, she stood here, in this White Room—a place that could very well become her tomb. The situation wasn’t in her favor, and she knew it. But as a seasoned officer accustomed to dealing with pressure, she concealed her fear, meeting Jae Hee’s gaze with unwavering calm. She understood that, however slim the chances, she had to seize them.

But was her composure and bravery enough to stop Jae Hee? Or would she become his next victim, just like so many others before her?

The White Room grew even more oppressive as each second.