The drama idea of putting a prosecutor in jail is interesting from both a legal and psychological perspective. The amnesia theme is also guided and explained neatly and realistically, which I appreciate. Exploring the past along with the protagonist, finding allies and discovering traitors are all interesting and emotional processes in this drama. Thanks to the smooth pacing of the plot and the portrayal of the characters, the viewer strongly sympathizes with the protagonist, who is played absolutely phenomenally, and as in few dramas, his emotions affected me as well. Although I am not an amnesiac prosecutor in prison, I clearly sympathized with the main character, which also involved me in the plot and the process of discovering the truth. Fair warning, however, that for a viewer with delicate emotions, this may be a rough ride. I remember after watching the drama for the first time, I really appreciated it, but I couldn't go back to it for a few years. Ji Sung is just too convincing in playing this emotionally complex character.