Senior Forensic Chemist Jack 'Pro Sir' Po is the head of the Forensic Department and is skilled at analysing criminal psychology. He has a unique view on human nature and is familiar with the structure of various firearms. Pro Sir works closely with Senior Pathologist Mandy Chung in a wide range of fields including psychology, anthropology, criminology and forensic science.

• Wayne Lai Yiu-cheung
• Maggie Cheung Ho-yee
• Kate Tsui Tsz-Shan
• Ron Ng Cheuk-hai
• Nancy Wu Ting-yan
• Aimee Chan Yan-mei
• Edwin Siu Ching-nam
• Ram Chiang Chi-kwong