I think that this drama had a lot going for it, but despite some really great things about it, it didn't quite do it for me.

I tried to start the show 3 times and each time something annoyed me in the story. Despite that, I kept watching to get to the good parts because of the high rankings the show received. I had a really hard time with the first 3-4 episodes. I found No Ji Wook and Eun Bong Hee's encounters to be rather awkward; not pleasant to watch at all. On top of that. I felt that there were way too many unlikable characters (evil killers, mean girls, cheating boyfriends, uncompromising DAs) and I didn't like the twist in which a girl suddenly became a suspect and there is literally nothing anybody saw or heard because of some ridiculous blackout. It was too unbelievable for me. However, it did eventually get to the good part.

--This part of the review can spoil parts of the show, so don't read it if you didn't watch the show. --

The criminal part of this story that pertains to the serial killer is its best part. The plot twists are surprising and interesting and I can't believe how amazing Dong Ha was in his role. Hyun Soo was probably the most interesting villain I've seen so far. He was scary, creepy and intriguing at the same time. His interactions with the people around were always tense and made things more interesting. I mean, Dong Ha really stole the show here. I felt like I feared him but was also curious about him. Just when I felt like I knew everything there was to know about him, it turns out that I was wrong all along. This was one of the best stories like that out there. However, I can't get over how unrealistic the lawyers' jobs were portrayed. I mean, this show was more of a police drama than lawyer drama. This is not what lawyers do! This really annoyed me throughout the show.

------ end of slight spoiler part -------

I think that the weakest part of the show was the romance. It started off kind of promising, but it quickly became bland and boring. They kept moving around in circles and almost no interaction between the two was interesting. I couldn't really see Ji Wook and Bong Hee as love interests and I don't think that I particularly liked Bong Hee's character. It's not that I disliked her; she was just very lukewarm to me and I don't want to feel this way about the main character. I also didn't feel much chemistry between the actors. I wonder if it was the writing or Nam Ji Hyun's acting. I mean, after watching Healer I can't get satisfied with the level of chemistry that I saw in Suspicious Partner.
I really liked how the relationships between the lawyers and other people developed and how natural the progression was. I regret that I didn't feel like that about the main couple.

All in all, I'm glad that I watched this show but it didn't make it into my all time favorites.