It is a very well made project. I was not patient enough to go through those details when the policemen investigate step by step but unable to find anything to move the case further. But, I decided to go on simply because enjoy so many good actor's performances. Slowing realised that the script writers portrayed the REALITY of the polices, detectives daily work under the circumstances those days. One exception is the actress who plays the daughter of Lee Wen, so uncomfortable to watch her acting with important role (personal opinion). YU is one of my favourite actors all time, but the best one in this project is the one playing the criminal SUNG, I can feel his energy through the TV screen that he can kill me by his eyes during the investigation. First time to know this actor, absolutely sensational !!!!!