Don't let the 40 episodes fool you, this drama is perfectly binge-watchable. I had no idea what to expect when I started watching, and the synopsis didn't help at all, but the episodes are so short that before I knew it I had watched 16 of them, and could hardly wait for the next one! Maybe I am a little biased because it combines two of my favorite K-Drama Genres (Romance and Psychopaths), and stars one of my favorite actors (Ji Chang Wook *swoon*), but from the first episode I knew this one would probably end up on my favorites list. It's not easy to combine comedy with genuine suspense, and I think this drama does a really good job of that. Yes, this is a RomCom that centers around a serial killer. It's also a great ensemble comedy, with an awesome cast. Is it perfect? Not at all. Is it addictive? Absolutely. First, allow me to express my love for Ji Chang Wook as Ji Wook. If you have ever been a fan of his at all (Healer & Empress Ki are both on my favorites list already) know that he does not disappoint, and this may even be his most charming performance yet! He is matched with Nam Ji Hyun as Bong Hee, who I have only seen in Shopping King Louis, but Bong Hee is a much more fun character, not at all passive or a damsel in distress, and really made me like her as an actress. Together these two have chemistry that is off the charts from the start. Both characters are stubborn, and headstrong, so there is plenty of banter, and there are a lot of hilariously cute moments between them from the beginning. The way he looks at her at times literally made my heart skip a beat. That smile... and the tongue thing was more than enough to make me fall for him! Even when the drama between them started to get repetitive, and moments towards the end got a little too corny, I still loved watching these two together on screen. As for the rest of the cast, there are literally no weak links. I loved all of them. The team of lawyers were completely endearing. Choi Tae Joon is super adorbs. It was also great to see Lee Duk Hwa be so funny, and not pure evil - I LOLed every time he called Bong Hee "lack of evidence". I even loved the random kid. There are also A LOT of frenemies in this drama, almost an entire cast full, and the amount of shade they throw at each other is also hilarious. However, the true MVP of this drama is Dong Ha as Jung Hyun Soo. I honestly don't want to say anything about why he is so good, but he's definitely an actor I will watch out for from now on. The writing in this one is a little all over the place, but I think it was strong where it really counted. I liked that even though this is a drama about Lawyers and Prosecutors, all of the court cases were somehow related to the main story, and not just emotional filler. There were definitely some major KDrama tropes in full effect, and a million unbelievable coincidences between the main couple, but I think they were executed well, so I won't complain about that. What I think makes this drama lose some of the excitement it had in the beginning is the repetitiveness, especially between the main couple. Bong Hee get particularly annoying at a certain point, but I do think it makes sense for her character, so I won't complain too much about that either. The only unforgivable annoyance I can think of is the amount of blatant product placement. Some scenes are literal Papa Johns commercials, so don't watch while you're hungry. By the end of the drama, once all the major mysteries are pretty much solved, and major conflicts are peacefully resolved, the drama becomes much more corny, but since I already loved the characters it wasn't that bad for me still. It probably helped that the episodes are broken up to be shorter so they dragged less. I also really liked the soundtrack, which definitely doesn't hurt, even with the terrible english lyrics. So, would I watch "Suspicious Partner" again? Definitely. Actually, I already am! We won't get another drama out of Ji Chang Wook for a while, since he's enlisting, and I went through too much withdrawal once it was over. It's already been fun rewatching certain moments now that I know the full story. Overall I would recommend this drama for sure, but I realize not everyone shares my strange biases. Still the good parts definitely outweigh any of this dramas flaws. If you love great villains, I would recommend this for that reason alone, but don't be scared off by the thriller aspect, because it surprisingly still is a relatively light drama. If you like cute bickering couples, and comedic banter in general, then there is plenty of that. If you love Chang Wook, of course this is a must see. If you love good ensemble cast chemistry, this cast delivers. If you don't mind cute romantic scenes interrupted by chilling suspense scenes, then I would say definitely add this to your list. I know this is definitely getting added to my favorites list!