Great execution of crime/mystery drama with romance. The dynamics between Lee Joon Gi and Moon Chae Won's partnership elevated this drama.

What I like:
1) Romance - Palpable chemistry between Lee Joon Gi and Moon Chae Won (a true partnership). Intimate scenes were hot. That first scene surprised me and I didn't expect a sexy but conflicted scene.
2) Acting - wow great acting by overall cast but Lee Joon Gi and Moon Chae Won's acting impressed me a lot. The scene when he confided in his wife broke me down in tears,
3) Male lead characterisation characterisation - wow just wow I dislike him in first episode as I thought he was stiff but my views changed when he protected his wife and confided in his wife.
4) The ending - the separation and doubts saddened me.
5) Plot - Gosh, unpredictable from episode 1. I also like how the current police cases were written most of the time.
6) Kim Ji Hoon - not much screentime but memorable.

What I dslike:
1) Baek parents were something else,
2) I think at one point I was lost in the plot because of too many red herrings in the current cases.

Favourite scene
When he confided in his wife in episode 10 & 11. I cried so much!