Detective Investigation Files Season 3

Director

• 
  Poon Ka Tak

Screenwriter

• 
  Lam Yuk Fan

Main Role

• 
  Michael Tao

  Cheung Dai Yong

  Main Role
• 
  Kenix Kwok

  Ko Jit/ Jessie

  Main Role
• 
  Joey Leung

  Lee Chung Yee/ Yee Jai

  Main Role
• 
  Margaret Chung

  Lee Si Lung

  Main Role
• 
  Liu Kai Chi

  Jap Wing Tin

  Main Role

Support Role

• 
  Law Koon Lan

  Chu Sau Kwan [Jessie's aunt]

  Support Role
• 
  Winnie Yeung

  Si To Sa Sa

  Support Role
• 
  Teresa Ha

  Bak Neung

  Support Role
• 
  Deon Cheung

  Foo Gam Wing [CID]

  Support Role
• 
  Esther Wan

  Lo Bing Bing [CID]

  Support Role
• 
  Monica Chan

  Paak Yun Tong

  Support Role
• 
  Gabriel Harrison

  Cheung Yut Fei / Harvey [Dai Yong's brother]

  Support Role
• 
  Wilson Tsui

  Woo Gin

  Support Role
• 
  Samuel Yau

  Chan Taai

  Support Role
• 
  Maggie Chan

  Ko Man [Jessie's sister]

  Support Role
• 
  Ellesmere Choi

  Poon Chi Tou [Psychologist]

  Support Role
• 
  Lau Dan

  Cheung Bak Chuin [Dai Yong's father]

  Support Role
• 
  Yvonne Lam

  Liu Chiu Fung [Madame Liu-CID]

  Support Role
• 
  Lai Suen

  [Sa Sa's grandmother]

  Support Role
• 
  Emotion Cheung

  Sek Siu Wai/ Gary [Hang Hang's biological father]

  Support Role
• 
  Law Lok Lam

  Fong Sung Yip [Si Lung's father]

  Support Role
• 
  Eileen Yeow

  Fong Nim Ching [Si Lung's sister]

  Support Role
• 
  Irene Wong

  Jim Chui Yi [Captain Jin's daughter]

  Support Role
• 
  Derek Kok

  Hui Wai Liem/ William [Yun Tong's husband]

  Support Role
• 
  Elton Loo

  Thomas [Sau Kwan's restaurant staff]

  Support Role
• 
  Chiu Shek Man

  Chow Sir [Police lieutenant]

  Support Role
• 
  Yoe Biu

  Sam [Jessie's colleague]

  Support Role
• 
  Kan Pui Kwan

  Mok Wing Hei [Jung Man Hoi's wife] [Case 6]

  Support Role
• 
  Choi Kwok Hing

  Wan Go Tin [Yun Tong's grandfather] [Case 8]

  Support Role
• 
  Carrie Ho

  Mao Tak Fan

  Support Role
• 
  Jenny Wong

  May

  Support Role
• 
  Cheung Hak Support Role
• 
  Chiu Hung Support Role
• 
  Ammathy Winnie Lui Support Role
• 
  Kam Hing Yin Support Role

Guest Role

• 
  Ching Siu Lung

  Kiu Jun/ Officer Kiu [Case 1]

  Guest Role
• 
  Patrick Tam

  Ho Chi Wang/Stephen [Case 1]

  Guest Role
• 
  Melissa Ng

  Yue Siu Yue [Case 1]

  Guest Role
• 
  Sam Leung

  Wong Ho Sung [Case 1]

  Guest Role
• 
  Zheng Guo Lin

  Chai Gwaan [Case 1]

  Guest Role
• 
  Eric Li

  Tony [Case 1]

  Guest Role
• 
  Tu Ling

  [Kiu Juns's wife] [Case 1]

  Guest Role
• 
  Karen Tong

  Lui Jin Mei/ Jeng So Sam [Case 2]

  Guest Role
• 
  Lau Kong

  Lui Sai Ho {Case 2}

  Guest Role
• 
  Sammy Lau

  Lui Jin Kei [Sai Ho's son] [Case 2]

  Guest Role
• 
  Peter Lai

  Gwok Sue San [Lui Jin Mei's biological father] [Case 2]

  Guest Role
• 
  Kitty Lau

  Lei Bo Haan [Case 2]

  Guest Role
• 
  Strawberry Yeung

  Sam Yeuk Mooi [Case 3]

  Guest Role
• 
  Lisa Lui

  Yu Bik Ling [Case 3]

  Guest Role
• 
  Edward Mok

  Choi Ji Chiu [Pak Yan Lam's boyfriend] [Case 4]

  Guest Role
• 
  Martin Tong

  A Dak [Hui Wai Lim's bandmate] [Case 4]

  Guest Role
• 
  Timmy Ho

  Ching Sau Mong [Case 5]

  Guest Role
• 
  Bruce Li

  Ching Sau On [Case 5]

  Guest Role
• 
  Marco Li

  Si To Leung [Sa Sa's Uncle] [Case 5]

  Guest Role
• 
  Wong Wai Tak

  Mr. Jue/Brother Dai B [Case 5]

  Guest Role
• 
  Li Shing Cheong

  Jung Man Hoi [Case 6]

  Guest Role
• 
  May Kwong

  Mak Hoh Hing [Case 6]

  Guest Role
• 
  Ngai Wai Man

  Yip Wai [Case 6]

  Guest Role
• 
  Koey Leung

  Emily [Case 6]

  Guest Role
• 
  Zhuo Fan

  A Hung [Case 6]

  Guest Role
• 
  Albert Law

  Ding Hon Cheung [Case 7]

  Guest Role
• 
  Wong Wai

  Yung Man Wai [Case 7]

  Guest Role
• 
  Cecilia Fong

  Leung Chau Yi [Hon Cheung's wife] [Case 7]

  Guest Role
• 
  Timmy Hung

  Yung Ga Kan [Man Wai's son] [Case 7]

  Guest Role
• 
  Ma Ching Yee

  Dung Tin Na [Man Wai's wife] {Case 7}

  Guest Role
• 
  Joe Ma

  Taam Ji Long/ Dr. Taam [Case 8]

  Guest Role
• 
  Chin Ka Lok

  Cho Heung Dung [Case 8]

  Guest Role
• 
  Chan Wing Chun

  Leung Ji Hong [Wan Bo King's husband] [Case 8]

  Guest Role
• 
  Lau Mei Shan

  Wan Choi Hung [Case 8]

  Guest Role
• 
  Angela Tong

  Erica [Case 9]

  Guest Role
• 
  Candy Chiu

  Bei Lei [Case 9]

  Guest Role
• 
  Cecilia So

  Haan Je [Jiu Ging Sing's mother] [Case 9]

  Guest Role
• 
  Ng Wai Shan

  Haan Je [Young] [Case 9]

  Guest Role
• 
  Ip Chun Sing

  Mang Boh [CID]

  Guest Role
• 
  Celine Ma

  Hoi Lun [Woo Gin's lover]

  Guest Role
• 
  Mak Ka Lun

  Sunny [Si Lung's senior]

  Guest Role
• 
  Lily Liu

  Lei Wen Fong

  Guest Role
• 
  Daniel Kwok

  [Police Officer]

  Guest Role
• 
  Sit Shun Kei

  Sang King Do [Homeless man]

  Guest Role
• 
  Leo Tsang Guest Role
• 
  Russell Cheung Guest Role
• 
  Yu Mo Lin Guest Role
• 
  Cheng Lei Guest Role
• 
  Yeung Shui Lun Guest Role
• 
  Danny Lo Guest Role
• 
  Bobo Hoi Guest Role