Detective Investigation Files IV featured a cast of 6 tracked actors. Of these, 6 (100%) are still alive today. The oldest surviving cast member is Sunny Chan Kam-Hung, age 59. This TV series starred Louis Koo and Jessica Hsuan.
100% still with us· verified cast
Survivorship
Cast Reunion Index: 100% still living
Cast6 members
| Person | Character | Status | DOB | Age | DOD | Age |
|---|---|---|---|---|---|---|
| 徐飞 | Living | 21/10/1970 | 55 | — | 55 | |
| 武俏君 | Living | 18/08/1970 | 56 | — | 56 | |
| 江子山 | Living | 01/01/1967 | 59 | — | 59 | |
| 文婉兰 | Living | 28/05/1975 | 51 | — | 51 | |
 Lee San-San 唐心如 Tong Sum Yu | 唐心如 Tong Sum Yu | Living | 09/10/1977 | 48 | — | 48 |
| Living | 14/04/1980 | 46 | — | 46 |
