Season 4
Detective Investigation Files IV (Chinese: 刑事偵緝檔案IV) is the 4th and final installment of the Detective Investigation Files TV franchised by TVB in Hong Kong. It is a complete reboot of the series, with new cast. The series focuses on the lives of two detectives, Tsui Fei (Louis Koo) and Kong Chi Shan (Sunny Chan), and the murder cases they deal with.
E1 · Episode 1
E2 · Episode 2
E3 · Episode 3
E4 · Episode 4
E5 · Episode 5
E6 · Episode 6
E7 · Episode 7
E8 · Episode 8
E9 · Episode 9
E10 · Episode 10
E11 · Episode 11
E12 · Episode 12
E13 · Episode 13
E14 · Episode 14
E15 · Episode 15
E16 · Episode 16
E17 · Episode 17
E18 · Episode 18
E19 · Episode 19
E20 · Episode 20
E21 · Episode 21
E22 · Episode 22
E23 · Episode 23
E24 · Episode 24
E25 · Episode 25
E26 · Episode 26
E27 · Episode 27
E28 · Episode 28
E29 · Episode 29
E30 · Episode 30
E31 · Episode 31
E32 · Episode 32
E33 · Episode 33
E34 · Episode 34
E35 · Episode 35
E36 · Episode 36
E37 · Episode 37
E38 · Episode 38
E39 · Episode 39
E40 · Episode 40
E41 · Episode 41
E42 · Episode 42
E43 · Episode 43
E44 · Episode 44
E45 · Episode 45
E46 · Episode 46
E47 · Episode 47
E48 · Episode 48
E49 · Episode 49
E50 · Episode 50
