Just when you thought you know how the story will unfold, you'll get hit with another plot twist! This movie has such a unique storyline that I dont think I have watched anything quite like it. Casting was on point. Kim Nam Gil who drew me to watch this movie was excellent as an antagonist. His acting complemented Sol Kyung Gu almost like a typical love team. Their chemistry on screen was so at par with each other that it carried the movie into a box office hit. I especially love how the ending left me in anguish... did it really ended the way the man with dementia said it did!? Did it!?