Unlike earlier crime dramas produced by MediaCorp, this series was focused more on forensic investigators rather than police officers.
Bai Ce is an experienced CID officer who is well known for his eccentricity and brilliance and his team consists of CNA and "Uncle Wang".
Much to their surprise, rookie officer Lan Tinghui, a recent university law graduate who changed careers, is assigned as their superior.
Evidence points to one of Bai Ce's former suspects from three years ago, a dangerous murderer who went by the nickname "Crazy Wolf".
Cultural centre head Mr Pan and his wife are found brutally murdered in their own home and the only witness is their traumatised six-year-old adopted son Wencong.