Character wise: At the beginning, none of the main leads are likable. They each have their own flaws which can annoy you. I mean it definitely annoyed me to see one who was reckless while the other didn't want to do anything at all and leave it in the hands of others; however you do begin to see character development in the male lead, Ji Suk. He eventually became my favorite character in this drama because of his selflessness and sacrifice. The female lead, Yoo Ryung, on the other hand, is the exact opposite. This is where the extra patience comes in. Her character can be a make it or break it for the viewers. If you can't stand her character because of her actions, you'll end up dropping this drama because she doesn't have development until after her secret is revealed which is around ep 11. So if you can tolerate the frustration she will give you, then you'll make it to the point where she's becoming a bit more likable. The frustrating second lead Ma Ri just seems like an angry person overall. She's pretty much mad at everything. She does become better towards the last few episodes but the progression for her reaching that point doesn't make sense at all. It's like one talk and she completely flipped 180. And then we have second lead Woo Hyuk which honestly he didn't really seem like he had a big role. He has the looks but that's about it. He attempts to form a love triangle between the leads but it fails just because Yoo Ryung wasn't into the romance department. I will say that the subway ghost does have actor potential to be the next lead character after seeing his acting on here. His acting was really convincing and I say he was able to outshine all of the other characters.

Story wise: It was a good introduction. I think this drama started off strong with the plot, only to fall short midway and towards the end. I liked how these cases, or I called it side stories, ended up telling a story that the leads can relate too, though most of the cases related to Yoo Ryung. The plot began to drag for me as it seemed like every week it was the same old thing and very little discoveries on what the title of this drama was about, "catch the ghost" or in this case subway ghost. I like how you couldn't guess who the subway ghost actually is. The writers make you believe it's person or that person. You always have suspicions. That being said, I'm disappointed the way the last episode was handled. The subway ghost had a big revealing, had a back story, only to be scrapped off in the first 15 mins of the episode. We don't know if he was caught or he died. That remains unknown which is lame because I say he played a vital role to this drama. It's just an okay ending overall, not bad or even sad but just nothing really big to talk about.

SUMMARY: If you can withstand, have the patience, tolerate, the frustrations of the female lead, and secondary female lead, then you'll be able to watch this drama from start to finish. Is it worth it? Well, the progression of the plot is slow, the last episode is missing a lot of important details so it did felt rush, romance is there but maybe towards the last few episodes. You'll probably not missing much if you past on this but if you like the actor or actress, hey give it a shot.