I LOVED this drama. This is coming from a huge fan of suspense/crime/romance. Signal is one of those dramas that I would recommend to anyone who's a big fan of suspense and crime. At first, I was quite confused as to what was going on, but the more I watched it, the more I got into it. This drama was one of those dramas that you couldn't stop watching even if you wanted to. Story: The story was amazing. It's about a special crimes unit solving past cases and how it affects the past and future. The cases are also very interesting to see as to how they solve it and how it actually affects the past. And also future. Acting: The acting was AMAZING. I give props to Lee Je Hoon because of his acting skills. Oh my gosh his acting skills were ON POINT. Just by watching him, it gave me so many different emotions and feelings like they were everywhere as I watched the drama. Kim Hye Soo's acting was also very good because some of the scenes that she was in made me very annoyed but if they let the watcher get annoyed that means the acting was amazing. Jo Jin Woong's acting was also very good because of the way he showed the character's emotions and stuff. Like he developed the character so well. Music: I didn't really pay attention much to the music because of how good the scenes were and all, but when I did hear it, they were very good. The music made the scenes look even realer and much more feel in the action parts of the drama. I highly recommend this drama to anyone who LOVES suspenseful dramas, action dramas, crime dramas, or even just a little bit of romance in them too.