Seo Kang-joon and Kim Hyun-joo back together (they were boyh in 'What Happens to my Family'), with Han Seok-kyu, making a really good team fighting corruption within the police and prosecution service.
It's not a light watch, so concentration is needed to follow a story that twists and turns. Never have so many characters looked guilty!
Well written and acted with a decent soundtrack too.
There were several occasions though, when I felt that, given the circumstances, characters blindly entered into dangerous situations far too naively.
I wonder if we'll get a season 2? I shall definitely watch if we do.