KDramas are great but (for me at least) most of them are not rewatchable. This one is.
Kim Dong Wook shines. He doesn't stray from character.
I would have liked this without personal story of Kim Dong Wook intermingled but you can't have just one season without personal story.
Teamwork pictured is very believable AND enjoyable.
Setting of police station, where it is located, becomes a character to some extent. I liked that.
They had to rush it in the end which was pity.
Overall very enjoyable (with tiny nuggets of information which I appreciated).