You probably haven't watch much CRIME themed TVB. Most of the TVB crime series set X amount of chapters per case. Thus, they'd allocate 3 - 5 episode on 1 case and etc etc. In this series, I felt that this was the 1st, if not in a great while where TVB allowed such drag in the story. They've prolonged the crime and the case as a whole. It seems to be working and I like it. It doesn't seem too predictable and BS like before.