The importance of police and detective show is the motivation behind the character. That is one of the reason people watch this genre and for me 'The Policeman's Lineage' failed on that part. They didn't show much character introduction scene so the pacing on the first half of the movie was too fast and that made the rest duration a bit dragging.

I wished they included more of Choi Min Jae and Park Kang Yoon's backstory from the start, so viewer could relate to their character gradually. Why Min Jae chose to spy on Park Kang Yoon? Why he prioritized on being a good cop? Why Kang Yoon justified every way to get his goal?

You don't have to worry about acting. They casted amazing actors, especially Jo Jin Woong. He is famous for playing detective character and you can trust him on that. My issue here is Choi Woo Shik. First of all, I am a big fan of him and I follow every of his work. But I don't think he suits this detective role OR his character's writing affect his acting here in this movie. The rest supporting casts are excellent on their part.

I didn't expect much from this movie so I didn't get that disappointed. There is no remarkable scene or character and I don't get attached to neither the heroine or villain. They have this 'Lineage' concept but they don't really focus on that. I think 'The Policeman's Lineage' will be better as drama than movie, where they can give every side's perspective more screentime.

Is it a good movie? Good acting yes, good story? No. It is a bit boring for mystery crime genre and there is no thrilling exciting moment for me since the beginning to ending. Watch it when you have nothing to watch anymore.