One of the rare Korean crime thrillers that is actually dark, gritty and suspenseful. I love the Crazy Dogs team and I really loved how the story delved into each character's past as part of their redemption. I love how every single character was important and it didn't fall into the trap of having many flat, one-dimensional characters for the sake of it (as some crime dramas do). The storyline is really thrilling - there are a lot of shades of grey and different perspectives of truth and justice that emerge. I really like the different lessons that the story conveys and I thought that it was really an interesting foray into unmasking the 'bad guys'. It really does challenge your assumptions and somehow makes you feel sympathy for them... In many ways, it reminds us that everyone has both good and evil within. I love how the actors convey this and I must say that everyone really delivered - Kim Sang Joon was amazing, and Park Hae Jin is so fitting for his emotionless yet troubled character. However, Ma Dong Seok and Jo Dong Hyeok really do shine in this drama especially since I hadn't really seen much of them beforehand. I hope they have more opportunities to shine in the future. They're both amazing at the action scenes which really bring this drama to life. I also have a soft spot for Kang Shin Il - he just has this aura of zen and tranquility. Honestly, I'm not the type of person who re-watches compulsively but I prefer to watch years later once I can't remember all the details. I think the drama is really well written and executed so definitely re-watchable. The only thing is that is it a crime thriller and once you know all the "answers", a tiny bit of the thrill and mystery is lost. That being said, it's the type of drama that has you hooked on once you start it because there are so many questions that you'd want to know the answers to.