Changbin had been working as a police officer for several years now — from dull days spent mostly in his office buried in paperwork or handing out tickets, to days when he sometimes had to draw his gun. And tonight was exactly one of those days.

Along with several other officers, Changbin had been assigned to ensure the safety of a well-known politician who had arrived for an event. Even though he didn’t fully support the man’s views, Changbin had agreed — after all, it was his job… and besides, there was a chance the killer he had been chasing for some time might be lurking in the area.

What he did know was that the person behind these brutal murders was being paid by people who wanted someone dead — whether it was an ex-wife, a jealous former classmate, or even a member of the victim’s own family.

And the victims? They all had one thing in common — they were not entirely innocent. They were people who had hurt others, such as former convicts who had received too short a sentence and had never truly paid for what they had done to their victims.

The killer seemed to be delivering vengeance — but only on bad people…

By the time evening came, around 9 p.m., Changbin was standing in front of the building where the important event was taking place. People in designer clothes entered one by one, each being checked by security to ensure that no unwelcome guest would slip inside.

He let out a quiet sigh, glancing up at the sky — when suddenly, a small movement on the roof of the building across the street caught his attention. Why would anyone be up there? Without thinking much about it, he headed into that building, climbing the stairs until he reached the door leading to the roof. Just in case, he drew his gun — if this was the hired killer, he had to be ready for anything.

He slowly opened the door and stepped forward, his footsteps quiet yet deliberate, the gun aimed ahead of him. It seemed empty and still — far too still.

Then, suddenly, the next thing he felt was a sharp blow to the head that sent him crashing to the ground, a shadow of a human figure standing over him.

…

His brow furrowed slightly as he became aware of a dull ache where he had been struck. His eyes slowly opened, and he tried to raise a hand to brush the hair away from his forehead — but he couldn’t. His hands had been tied behind him to a post.

He cursed quietly under his breath, and when he noticed the slightest movement nearby, his gaze fixed on a figure — a woman.