Kevin Cheng
The series is a direct sequel to the 2006's "Forensic Heroes" (). The main cast features Bobby Au-Yeung, Frankie Lam, and Yoyo Mung from the original series and new cast includes Kevin Cheng and Charmaine Sheh. Linda Chung also reprises her role into this sequel, however due to schedule conflicts with another project, she was written off early in the story.