This is a show that will linger in your mind long after you are finished with it. It is captivating, heart-wrenching, beautiful, devastating, cruel and agonising. The story of two detectives connected by an old walkie-talkie solving cold cases is a fantastic concept and this show did not falter in exploring how far it could go. I've never watched a show that has finished as strongly as it started.

Signal deserves a longstanding reputation as one of the greatest TV shows in Asia. For that, the writers and the actors deserve so much credit. They delivered with each episode. There was no silly subplot, no silly love triangle. This show was coldly ruthless in telling the story it wanted to. The magical realism imbued it with excitement but it was the human story, the struggles involving the characters, that won you. They were all good people trying to fix the old wrongs. At the heart of it was Lee Jee-Haan, the old detective guided by a an unmoving moral compass always pointing the right way. His emotions, the intensity of his resolve and ethics, was beautiful. The music complemented the show superbly too and accentuated the tone of every scene, adding rather than diminishing.

I would recommend everyone to watch this show. You will cry, you will sit in despair, your heart will ache for them. But you will watch it all the way through believing in them as Lee Jee-Haan did in justice. This might just be the greatest Korean show i've ever watched.