"The Frog" it's a drama that follows two different timelines, which sometimes got a little confusing, but when you understands the development, it's really impressive.
Yeong Ha runs a guest house and Seong Ah comes one day to stay with her "son". The twist in here it's that Yeong Ha understands that Seong Ah killed the boy in the house, but doesn't say anything because he's afraid of the rumors and not being to rent the house again.
This is connected with Sang Jun's story. He had a motel and a serial killer killed someone in there and it became famous, but not in a good way, changing Sang Jun's life forever.

The story is intriguing, smart and the development is amazing, you stay stuck from the beginning to the end. The acting is spectacular, specially Kim Yoon Seok and Go Min Si <3
Chan Yeol really surprised me as an actor, I have seen him in "Missing 9", but I couldn't really see him as an actor, only as an idol, but after this role, it's impossible not to.

Seong Ah is awesome, I still can't forget her crazy eyes and even that I know that she's a psychopath, my dark side just fell in love with her. HAHAHA'
She's a very interesting character, the way that she doesn't feel guilty for what she's done. It was very unfortunate for Yeong Ha to have her in his guest house.

The drama's ending is very satisfying, because the bad guys got they deserved and the people involved finally had peace.