A good thriller/crime drama ?

 Marine:

• A Murderous Affair in Horizon Tower
• The Long Night
• Love Me if You Dare
• Cruel City
• My Beautiful Bride
• Missing Noir M

thank you but I have seen these :) 

 ColourMePurple:

My Name - female centric plot. Excellent in my opinion.

Taxi Driver - it is a revenge plot based on real cases that took place in South Korea. They have strong female characters working as a team with the male lead.

Big Mouth - male lead is the main character but his wife is a big part of the story. There are grey characters.

Don't want to overwhelm you with too many names. If you've already watched these, I'll share some more.

I have seen them all apart from Big Mouth. I dropped  that I dunno how often. I cannot do Yonah XD She is annoying me to no ends.
If you have any more, please share :) 

 Gelatinne:

Hello :-)

I recommend the following:

- Maou (2008) - Jdrama (great one, which led to a Korean adaption The devil -which I have not seen)

- Majo Saiban (2009) - Jdrama 

- Tantei Gakuen Q (2007) - Jdrama (central characters are middleschoolers leading investigation, so might not be exactly what you want), there is also a SP episode (prequel)

- Hidarime Tantei EYE (2010) - Jdrama (similarly as above high schoolers leading investigation) and there is also a SP episode

- Two Weeks (2013) - Kdrama (amazing memories of that one!!!)

- The Quiz Show 2 (2009) - Jdrama (no need at all to have seen Quiz Show 1, it is separated)

- Hero (2001) - Jdrama (an oldie but I have nice memories of this one, it is less dark and more on the law side / investigation since you follow a prosecutor team ^^)

+1 for Ryusei no Kizuna recommended above 

thank you these are indeed dramas I haven't seen and will definitely check out! thank you very much for your help