# Detective Investigation Files

Detective Investigation Files is a 1995 Hong Kong crime investigation drama series produced by Poon Ka Tak for TVB and is the first installment in the Detective Investigation Files Series. The main characters were played by Michael Tao, Joey Leung, Kenix Kwok and Louisa So. This installment featured five different cases. In 2022, the drama was selected as one of ten classic TVB dramas being honoured for Youku and TVB's new programme.

## Synopsis

Cops Yung (Michael Tao) and Yee (Leung Wing Chung) were good friends as well as partners. Their shrewdness and intelligence helped break many mysterious murder cases such as ‘Love Suicide’, ‘Chopped Corpse’, ‘Murderer Vs Victim’.
Yung and Yee shared their worries over love too. Yung's girlfriend Chi (Kwan Po Wai) jilted Yung to go after Yee when she learned about Yee's wealth. Yung, on the other hand, met the headstrong reporter Chit (Kenix Kwok) during an investigation and they fall for each other. However, Chit already had a boyfriend...

## Cast
### Main cast

| Actor | Role | Description |
| Michael Tao | Cheung Tai Yung (張大勇) | 張Sir、勇哥、大勇 Sergeant Detective Jessie's boyfriend Gigi and Chung Yi's best friend |
| Joey Leung | Lee Chung Yi (李忠義) | 義仔 Senior Constable Detective Tai Yung's subordinate and best friend Gigi's husband |
| Kenix Kwok | Ko Chit (高婕) | Jessie、「細妹」 Reporter Tai Yung's girlfriend |
| Louisa So | Yung Kam Chi (容金枝) | Gigi、阿枝 Waitress Tai Yung's best friend Chung Yi's wife |

### Case 1: Insurance murder case（Episode 1-3）

| Actor | Role | Description |
| Henry Lee | Fong Chun Kit | Lee Man Fong's husband Daisy's secret lover Captured in episode 2 |
| Tsui Ga Bo | Lee Man Fong | Nurse Fong Chun Kit's wife Stabbed to death by Daisy in episode 2 |
| Jay Leung | Daisy | Insurance manager Fong Chun Kit's secret lover Murdered Lee Man Fong and framed Fong Chun Kit for the murder in episode 2 Captured in episode 3 |

### Case 2: Secret of an Angel（Episode 3-6）

| Actor | Role | Description |
| Chong Man Sui | Chung Ho Yi | Canteen cashier A Vietnamese-Chinese Chung Kit Yi's younger sister Lee Chung Yi's ex-girlfriend Killed Wu Sam in episode 3 Arrested in episode 5 |
| Pok Kwan | Wu Sam | Tabloid reporter Extorted Chung Kit Yi numerous times Killed by Chung Ho Yi in episode 3 |
| Lee Kwai Ying | Chung Kit Yi | Chung Ho Yi's older sister Wife of a wealthy businessman Gave birth to a deformed baby and was extorted by Wu Sam |

### Case 3: The Butterfly Murders case（Episode 6-10）

| Actor | Role | Description |
| Ram Chiang | Wong Wai On | Tse Yuen Ting's husband |
| Mak Chui Han | Tse Yuen Ting | Emily Jessie's Boss Wong Wai On's wife Killed Lam Yan Mei and Peter Attempted to kill Jessie and Wong Wai On Shot by Tai Yung when she tried to run him over and drove off a cliff (Unknown whether she died from the gunshot or car crash) |
| Zhang Yan | Lam Yan Mei | 阿May Wong Wai On's secret lover Jessie's friend Killed by Tse Yuen Ting |
| Gregory Charles Rivers | Peter | Tse Yuen Ting's secret lover Killed by Tse Yuen Ting |

### Case 4: Videotape extortion（Episode 12-14）

| Actor | Role | Description |
| Angie Cheong | Pak Mei | Former strip dancer Conspired with Wong Keung to daze and extort money from various men Killed by Wong Keung in episode 12 |
| Derek Kok | Wong Keung | Pak Mei's boyfriend Attacked and killed Pak Mei in episode 12 Arrested in episode 14 |

### Case 5: True and false kidnapping (Episode 15-20)

| Actor | Role | Description |
| Maggie Chan | Ko Man | Jessie's older sister Kan Tong Tong's mother Failed to fake Kan Tong Tong's kidnapping |
| Meiki Wong | Kan Tong Tong | Ko Man's daughter Jessie's niece Kidnapped by Kan Chi Yuen |
| Gary Chan | Kan Chi Yuen | Ko Man's brother-in-law Kan Tong Tong's uncle Kidnapped Kan Tong Tong |