Aaron Kwok Fu Sing's upcoming film release MURDERER was his favorite. He even said that after returning to Hong Kong after the Olympic Game closing ceremony, this script was on his table. He spent a night to read it as all the hair on his body stood on its end.
Sing Sing said, "The chilling part is not only the story but also the character's psychology condition change. When he realizes that he is the least trustworthy person, it is the most bone chilling. Later I very quickly decided to play this role. At first I read many criminology books and consulted some psychology and law experts. Perhaps because of that, I couldn't put myself out of the character sometimes."