This episode appears to be based on the public's concern over Internet addiction.
Ken Leung has portrayed three different characters over the course of the series:
- Episode 5.12 Progeny (1995) - Forensic Technician Chung.
- Episode 6.4 Jeopardy (1995) - Forensic Technician Chung.
- Episode 10.21 Narcosis (2000) - Stephen Wong.
- Episode 13.9 The Wheel (2002) - Tommy Wong.