Must watch detective/action dramas in your opinion

Can you reccomend me some must watch detective dramas in your opinion, i preffer korean or japanese, but i am good with anything that you think is really good, thanks everyone who help :D 

Missing Noir M

Bad Guys (K)
Missing Noir M (K)
Love me if you dare (C - Works alongside the police)
Dr Frost (K - works alongside the police)
Ouroboros (J)
Cruel City (K)
Myung Wol the Spy (K)
Oh My Ghost (involves police)
Signal
Time Between Dog and Wolf (special forces)
You're All surrounded

Not seen it but there is Special Affairs Team TEN as well

Love Me if You Dare 
Kagi No Kakatta Heya (this is so cool) lol
The Girl Who Sees Scents
Liar Game (although not the detective or crime type)
Hard Nut
Otenki Onee-san
Subete ga F ni naru
God's Quiz
The Memorandum of Kyoko Okitegami

I've known many dramas since it's really my kind of genre. ^^

Signal, Cruel City and Bad Guys.... All are south korean dramas and AMAZING 

Healer - just got finished watching it. LOVED it!