Season
- Season 4 1999-03-29
- Season 3 1997-09-01
- Season 2 1995-12-11
- Season 1 1995-03-13
Episode
- Episode 1: Episode 1
- Episode 2: Episode 2
- Episode 3: Episode 3
- Episode 4: Episode 4
- Episode 5: Episode 5
- Episode 6: Episode 6
- Episode 7: Episode 7
- Episode 8: Episode 8
- Episode 9: Episode 9
- Episode 10: Episode 10
- Episode 11: Episode 11
- Episode 12: Episode 12
- Episode 13: Episode 13
- Episode 14: Episode 14
- Episode 15: Episode 15
- Episode 16: Episode 16
- Episode 17: Episode 17
- Episode 18: Episode 18
- Episode 19: Episode 19
- Episode 20: Episode 20
- Episode 21: Episode 21
- Episode 22: Episode 22
- Episode 23: Episode 23
- Episode 24: Episode 24
- Episode 25: Episode 25
- Episode 26: Episode 26
- Episode 27: Episode 27
- Episode 28: Episode 28
- Episode 29: Episode 29
- Episode 30: Episode 30
- Episode 31: Episode 31
- Episode 32: Episode 32
- Episode 33: Episode 33
- Episode 34: Episode 34
- Episode 35: Episode 35
- Episode 36: Episode 36
- Episode 37: Episode 37
- Episode 38: Episode 38
- Episode 39: Episode 39
- Episode 40: Episode 40
- Episode 41: Episode 41
- Episode 42: Episode 42
- Episode 43: Episode 43
- Episode 44: Episode 44
- Episode 45: Episode 45
- Episode 46: Episode 46
- Episode 47: Episode 47
- Episode 48: Episode 48
- Episode 49: Episode 49
- Episode 50: Episode 50
Detective Investigation Files Season 4
"Detective Investigation Files" revolves around the professional and meticulous investigations carried out by a group of dedicated police officers. As they delve into mysterious deaths with unclear causes, they tirelessly work towards maintaining peace and security for the people. However, their demanding job often comes at the expense of personal happiness.
Cheung Dai Yong, a brilliant and astute police officer, has a track record of solving crucial cases. His trusted colleague, Lee Chung Yee, stands by his side, and together they tackle challenging and complex cases. Amidst their work, Dai Yong encounters Ko Jit, a tenacious journalist. Despite their initial conflicts, a deepening connection blossoms between them. However, Ko Jit already has a romantic partner.
