Criminal x policeman (or policewoman) relashionship

Hello,
So after watching Signal, I tried to get rid of my slump by watching an american tv serie, Dexter. And I'm now in a new slump... I loved Dexter and Debra relashionship with all the hidden identity thing. As the title says, I'm looking for a criminal x policeman/woman relashionship. For this one, I would prefer a modern drama but I don't mind period dramas. Any country is fine.
I have already watched :
- City Hunter
- Guilty Akuma to Keiyakushita Onna
- Healer
- Iljimae
- Myung Wol the Spy
- The Return of Iljimae
Well, those are not necessarily criminal x police but at least the hero is a criminal. The x police is a bonus. (From what I remember, only Guily Akuma has that.)

Padam Padam

Definetely Cruel City

Orthros no Inu, Devil/Maou, Take Five

You should watch Time Between Dog & Wolf. Unfortunately the heroine isn't that badass, but it's a great drama nonetheless. I also recommend 'I remember you'. Even though the hero is on the side of the police, he has his own agenda. The leading woman is awesome and a police woman :)