Original Sin

Composer

• 
  Chen Xue Ran

Director

• 
  Raymond Yip
• 
  Wang Tao Tao

Executive Producer

• 
  Dai Ying

Producer

• 
  Han San Ping
• 
  Gong Yu
• 
  He Jun Yi
• 
  Gao Bo Yang

Screenwriter

• 
  Jiang Feng

Main Role

• 
  Yin Zheng

  Lu Li

  Main Role
• 
  Zhai Tian Lin

  Chi Zhen

  Main Role

Support Role

• 
  Michelle Bai

  Wu Wen Xuan

  Support Role
• 
  Cherry Ngan

  Suo Fei

  Support Role
• 
  Li Ruo Ning

  Wen Miao Ling

  Support Role
• 
  Li Chen Hui

  Zheng Shi Jie / "Egghead"

  Support Role
• 
  Li Guang Fu

  Zhang Ju [Former police chief]

  Support Role
• 
  Zhang Shen

  Dong Ling Qi [Police chief]

  Support Role
• 
  Xu Min

  Gao Hang

  Support Role
• 
  Wu You

  Lao Shi [Coroner]

  Support Role
• 
  Wu Hao

  Chu Dao [Lu Li's former partner]

  Support Role
• 
  Tien Niu

  [Chi Zhen's mum]

  Support Role
• 
  April Chan

  Chi Wen [Chi Zhen's sister]

  Support Role
• 
  David Chiang

  Lu Zi Ming [Lu Li's father]

  Support Role
• 
  Nina Paw

  [Lu Li's mum]

  Support Role
• 
  Evangeline Chen

  Lu Yi Nuo [Lu Li's daughter]

  Support Role
• 
  Lin Jiang Guo

  Lao Hu [Wen Xuan's husband]

  Support Role
• 
  Wan Yeung Ming

  Mr. Chen

  Support Role
• 
  Eric Chen

  Kang [Mr. Chen's assistant]

  Support Role
• 
  Zhang Hao Sen

  Wang Ke

  Support Role
• 
  Omar Gao

  Guan Zhi Yuan

  Support Role
• 
  Yuan Teng

  Bao Yu

  Support Role

Guest Role

• 
  Tracy Chong

  Dora (Ep. 1-4)

  Guest Role
• 
  Joyce Lim

  [Dora's mum] (Ep. 1-4)

  Guest Role
• 
  Emily Kong

  Lily (Ep. 1-4)

  Guest Role
• 
  Bai Ru

  Liu Ya Ping (Ep. 1-4)

  Guest Role
• 
  Jet Lew

  Shen Zhi [Liu Ya Ping's husband] (Ep. 1-4)

  Guest Role
• 
  Gai Yew Lan

  [Lily's grandmother] (Ep. 2)

  Guest Role
• 
  Marco Chen

  Zhang Zhi Gang (Ep. 3-4)

  Guest Role
• 
  Liu Ying

  Li Xin Yi (Ep. 3-4)

  Guest Role
• 
  Li Qing

  Sun Wei (Ep. 5-8)

  Guest Role
• 
  Eric Lin

  Chen Ming Yang (Ep. 6-8)

  Guest Role
• 
  Lim Ching Miau

  Chen Ming Yun (Ep. 6-8)

  Guest Role
• 
  Thian Siew Kim

  Cheng Xiao Xiao Mei (Ep. 6-8)

  Guest Role
• 
  Guo Zhao Yu

  Chen Ming Yu (Ep. 6-8)

  Guest Role
• 
  Windz Neom

  Chen Ming Guang (Ep.6-8)

  Guest Role
• 
  Huang Si Qi

  Wang Shu Yi (Ep. 6-8)

  Guest Role
• 
  John Tan

  Liang Si Wen [Shu Yi's new husband] (Ep. 6-8)

  Guest Role
• 
  Ma Wen Bo

  Wang Zhang Lin [Wang Shu Yi's father] (Ep. 6-8)

  Guest Role
• 
  Cathryn Lee

  Na Pa (Ep. 9-12)

  Guest Role
• 
  Tan Hau Yen

  Xu Liang (Ep. 9-12)

  Guest Role
• 
  Li Long Jun

  Liu Yuan (Ep. 9-12)

  Guest Role
• 
  Zhang Dian Lun

  He Xin Yu (Ep. 9-12)

  Guest Role
• 
  Jiang Zi Chen

  Feng Ting Ting (Ep. 9-12)

  Guest Role
• 
  Koe Shern

  Wei Qiang (Ep. 9-12)

  Guest Role
• 
  Fan Yi Ze

  Cheng Fei (Ep. 9-12)

  Guest Role
• 
  Jeffrey Cheng

  Du Yun Xiang (Ep. 9-12)

  Guest Role
• 
  Ong Ai Leng

  Xu Xiao Rui (Ep. 9-12)

  Guest Role
• 
  Terry Ong

  Song Ping (Ep. 11-12)

  Guest Role
• 
  Jacky Kam

  Li Li Xing [Royal Police Deputy Chief] (Ep. 11-12)

  Guest Role
• 
  Kitty See

  Zhang Lin [Housekeeper] (Ep. 11-12)

  Guest Role
• 
  Zhang Xiao

  Huang Jia Lun (Ep. 14-16)

  Guest Role
• 
  Sun Jia Lin

  He Yun Fei (Ep. 14-16)

  Guest Role
• 
  Sun Zi Hang

  Gu Xing Wei (Ep. 14-16)

  Guest Role
• 
  Chen Yang

  Liu Hao (Ep. 14-16)

  Guest Role
• 
  Chye Yang

  Li Jin Xiang (Ep. 14-16)

  Guest Role
• 
  Loo Aye Keng

  Ms. Cui [Dormitory supervisor] (ep. 15-16)

  Guest Role
• 
  Gary Yap

  Shen Cheng (Ep. 15-16)

  Guest Role
• 
  Su Yu Jie

  Wu Zhen Yi (Ep. 17-20)

  Guest Role
• 
  Mandy Chen

  Zhao Chun Ling [Wu Zhen Yi's ex wife] (Ep. 17-18)

  Guest Role
• 
  Wang Zheng

  Li Han Wen (Ep. 17-20)

  Guest Role
• 
  Emily Chan

  Zhou Ying Ying (Ep. 17-20)

  Guest Role
• 
  Evan Chin

  Zhao Meng Yao / "Big Sister" (Ep. 17-20)

  Guest Role
• 
  Bai Kai Nan

  Sun Qian [Drunk witness] (Ep. 17-20)

  Guest Role
• 
  Xu Yun Long

  Jia Ming Liang [Drunk witness] (Ep. 17-20)

  Guest Role
• 
  Steve Yap

  David (Ep. 19-20)

  Guest Role
• 
  Huang Rong

  Xiao Han [Class rep] (Ep. 21-24)

  Guest Role
• 
  Eliza Yu

  Principal Lin (Ep. 21-24)

  Guest Role
• 
  Agnes Wang

  Zhang Xin Ling [Wen Xuan's nurse friend] (Ep. 21-24)

  Guest Role
• 
  Wilson Tin

  [Wen Xuan's foster father] (Ep. 21-24)

  Guest Role
• 
  Susan Leong

  [Wen Xuan's foster mother] (Ep. 21-24)

  Guest Role
• 
  Lion Chong

  [Wen Xuan's brother] (Ep. 21-24)

  Guest Role
• 
  Feon Lai

  Aunt Zhao [Wen Xuan parents' neighbour] (Ep. 21-24)

  Guest Role
• 
  Wang Tao Tao

  [Thug] (Ep. 24)

  Guest Role

Unknown

• 
  Eric Lay

  Chen Jie Hui

  Unknown