This is the best detective crime mystery drama I've ever seen and drama that forever will be engraved in my heart. Everything about it is a pure perfection. From beginning till the end. In fact, what fascinated me more is that this drama becomes only better with every single episode, not losing its way, just becoming more and more perfect. How much I love this drama comes from this: When I was marathoning it I wasn't watching previews because I wanted to be surprised by awesomess of every episode, believe it or not. I was seriously invested right from the beginning to the point where it ruined me emotionally. Totally. ;) However, even though this drama gives an amazing thrill, mystery and crime to me the most important part and essence of Signal are definitely characters and their development. I didn't expect to give us such a human and touching side. That side of Signal made our heart be broken over and over again, to emotionally ruin us, to affect us in every possible way and to learn us some life lessons and essence of everything: "If we don't give up, there's still hope."And that's the only truth of life. :P -I loved the whole idea of a main story: going back and forth, traveling from present to past, using walkie-talkies to communicate, how does it affects to present when past changes, I loved how they solved cases, how something new always appear, their way of thinking and of course I liked how they based it on a true stories. The world can be so cruel... And now the part when I'm most excited to write are three main characters, Park Hae Young, Cha Soo Hyun and Lee Jae Han. They're outstanding, enormously awesome, well simply perfect. If you ask me to chose which one of them I loved the most, I'd say all three. I'd have no heart to chose, because my love for all of them are equal. Seriously. And it will forever stay that way. Why? Well, Cha Soo Hyun- she's the woman I really respect and love. With her past she's clumsy, naive, cute and brave, but with her present self- cold, devastated, tortured, victimized, but yet again brave, very brave. I remember that scene which made me shout to her "I love you so much, woman". because what she did, I believe only rare number of woman would be prepared and able to do that. She's definitely one of the best rookies, team leaders and females I've ever seen. ;) Park Hae Young- Gosh, how much I adore him. He's so intelligent, cool, brave and of course sexy. I liked how his mind worked, his relationship to Jae Han, his care for him, his fight untill the end. Hae Young is a man I'd definitely would be glad to have in my life. And my dearest Jae Han: A fair detective, a man where a word "give up" doesn't exist in his dictionary, a man with an honour and strong sense of justice a man as big as mountain, yet with a pure and great heart. I loved him to the core and I was rooting for him all the way, whenever he has done a right thing I was always saying "I adore you Jae Han." Also, his interactions with Soo Hyun in the past were so interasting, pure and sweet to me, I enjoyed to the fullest. He should be a proof to all of us: To never give up, to just keep going, because answer will come to us sooner or later, but in a right place and time. One more thing I loved about this drama is that three main characters are connected, they feel each other with a strong bond. Their characters grow every time they become entagled with each other, be it in a past or present. Jae Han with Soo Hyun in a past, and with Hae Young in a present and a past, Soo Hyun with Hae Young (I seriously loved how they become so strong together, Hae Young slowly changed her) in a present and Hae Young with Soo Hyun in the present and Jae Han in the past. It's simply fantastic. The strong point of Signal is definitely the out-of-earth acting. It's outstanding. KHS is very talanted actresses and most of all the beautiful one, because not only she's 45, but because she has that charm that makes you adore her. She rocked this role, that's for sure. How she managed to act from the girl who knows nothing about the world to the strong, wounded, painful woman I can only say BRAVO. I know LJH from before and this drama only made me love him more and more. He's amazing. His very professional acting, his voice, hands and the most beautiful profile and nose I've ever seen (I'm fangirling right now hahaha). My Lord, he is PERFECT. And our veteran and awesome actor JJW. After this role, he has become one of my favorite actors. Only words of praise. And the osts... Gosh, the best of the best. My fav, ones are definitely "I will forget you"and "The Road." Though, every ost is memorable to me and I'm listening it everyday. Somehow, every ost is related to the specific character and scenes and listening them I keep remembering this drama over and over, so I can never forget it. :P Would I rewatch it? YES. Definitely, without a thinking yes. I already have an urge to watch it again, I just want to erase my memories and watch it. Like I said it before to me it's the best detective drama EVER, a drama where it taught to me that no matter how hard and difficult it gets, what matters the most it to never lose hope and faith, because everything falls into place and that even though you can't change the past, you can be a reason for a good change in a future. So, if you ask me, I'd say go and watch it right now, you'll not regret it, for sure. ;)