| Cast | Role | Description |
|---|
| Louis Yuen | Lok Koo-tin
洛古天 | A gynecologist who is a good friend of Chris. He later dates JJ's secretary, Moon Cheuk, who admired JJ, in order to help JJ and Chris salvage their relationship. |
| Vincent Wong | Duncan
鄧啟善 | Helen Ma's second son and Po-tei's younger half-brother who is a manager of a finance company. He was later taken advantage of by Pong Tit-sum and Oscar Pong, causing him to go broke and nearly driving him to suicide. |
| Benz Hui | Kam Po-cheung
甘保祥 | JJ's father and Kam Po-tei's adoptive father. He was the ex-lover of Mei-san's mother, Fong Yee-ha, whom he still admires. |
| Mary Hon | Helen Man
文英 | A judge who abandoned his first son in a soccer field during her youth. She later discovers her long-lost son to be Po-tei, and does her best to make it up to him. |
| Mandy Wong | Wong Fei-fei
黃菲菲 | A pregnant woman from Mainland China who takes advantage of Kam Po-cheung and her aunt, Chan Chat, in order to give birth in Hong Kong. She was later arrested for blackmail and giving false testimony and also indirectly killed her child. |
| Derek Kok | Bill Hung
洪震滔 | A deceiving barrister and JJ's nemesis. He admires Pong Tit-sum, who manipulated him to commit murder. |
| Alice Chan | Pong Tit-sum
龐鐵心 | The chairperson of Pong Enterprises who took advantage of barrister Bill Hung's love for her to commit countless crimes. |
| Oscar Leung | Max Tai
戴奕行 | A pupil prosecutor under JJ. He has a crush on fellow pupil prosecutor KiKi Kei and eventually develops a relationship with her. |
| Samantha Ko | KiKi Kei
紀慕芝 | A pupil prosecutor under Chris who was raped by Oscar Pong. She later dates fellow pupil prosecutor Max Tai, who stood by her during her hardest times. |
| JJ Jia | Sheh Chuk-ching
佘祝青 | A beautician who manipulated her lover, Nok Ching-hung, to murder her husband, Mok Wai-fu, to accumulate his wealth. She was later found guilty of murder. |
| Grace Wong | Moon Chuk
祝雙悅 | JJ's secretary who admires him and openly pursues him. She later dates and falls in love with Lok Tin-koo when the latter pursues her to salvage JJ and Chris' relationship. |
| Patrick Tang | Patrick Leung
梁健柏 | A police officer of the Narcotics Bureau who witnessed the murder of fellow policeman Mo Hok-lik. In order to convict the murderer, Poon Hing, he forges evidence to testify against him. |
| Ronan Pak (白健恩) | Oscar Pong
龐世邦 | Pong Tit-sum's younger brother who raped pupil prosecutor KiKi Kei, but used his connections to get away with the crime. He was later sentenced to a year of probation of disorderly conduct and contracted HIV/AIDS later due to his sex habits. |
| Christine Kuo | Bella | JJ's ex-girlfriend who was hired by Chris to seduce him as a prank on his birthday. |
| Toby Chan (陳庭欣) | | A bar girl who attempted to seduce JJ. |
| Sammy Sum | Poon Hing
潘興 | A drug dealer who had been trailed by Kam Po-tei and Patrick Leung for years. Poon murders Po-tei's subordinate, Mo Hok-lik, which was witnessed by Patrick. He was later found guilty of murder and was sentenced to life imprisonment. |
| Jack Wu | Albert Ko
高柏宏 | A barrister who was Bill Hung's pupil and was the representative lawyer for Sheh Chuk-ching, Poon Hing and Liu Chi-man. |
| Raymond Chiu (趙永洪) | Ivan Cheung
張秉 | A solicitor. |
| Yu Chi-ming (余子明) | Fong Ching
況程 | Chris Fong's father. |
| Chun Wong (秦煌) | Ngai Tung-fai
艾東輝 | Ngai Mei-san's father who was Kam Po-cheung's rival during high school. |
| Rosanne Lui (呂珊) | Fong Yee-ha
方綺霞 | Ngai Mei-san's mother and Kam Po-cheung's high school sweetheart. |
| Rainbow Ching (程可為) | Cheung Suk-Ngo
張淑娥 | Kiki Kei's mother. |
| Kong Ming-fai (江明輝) | Ngai Ka-yam
艾家蔭 | Ngai Mei-san's older brother. |
| Timothy Cheng (鄭子誠) | Chu Ting-lung
朱定龍 | Superintendent of the Regional Crime Unit. |
| Patrick Dunn (鄧梓峰) | Tam Seung-king
譚尚京 | Po-tei's subordinate. |
| Otto Chan (陳志健) | Yee Mo-sze
爾摩斯 | Po-tei's subordinate. |
| Hoffman Cheng (鄭世豪) | Mo Hok Lik
武學力 | Po-tei's subordinate who was murdered by Poon Hing. |
| Yeung Ying-wai (楊英偉) | CK Kwok
郭正 | Deputy Director of Public Prosecutions of DOJ. |
| Chan Wing-chun (陳榮峻) | Chan Lok-yee
陳樂意 | Prosecutor of the Advocacy Division of DOJ. |
| Jacky Yeung (楊鴻俊) | Law Cho-wing
羅左榮 | Member of the Advocacy Division of DOJ. |
| Geoffrey Wong (黃子雄) | Lee Yin-chi
李賢智 | Member of the Advocacy Division of DOJ. |
| Cindy Lee (李思雅) | Flora Lam
林麗珊 | Pupil prosecutor under JJ. |
| James Ng (吳業坤) | George Po
布偉業 | Pupil prosecutor under Chris. |
| Bella Lam (林穎彤) | Hannah Wai
韋天恩 | Pupil prosecutor under JJ. |
| So Yan-chi (蘇恩磁) | Sophia | Secretary of DOJ. |
| Teresa Ha (夏萍) | Rosemary Chan
陳三妹 | Janitor of DOJ. |
| Mak Ka-lun (麥嘉倫) | Wat King-kei
屈敬基 | A staff at Po-cheung's cafe. |
| Kirby Lam (林秀怡) | Yim Chung
嚴頌 | A staff at Po-cheung's cafe. |
| Kong Fu-keung (江富強) | Brother Kwai
柱哥 | A staff at Po-cheung's cafe. |
| Alice Fung So-bor | Chan Chat
陳七 | A janitor at Po-cheung's cafe and Wong Fei-fei's aunt. |
| Hugo Wong (黃子衡) | Mok Wai-fu
莫維夫 | Sheh Chuk-ching's husband who was murdered by her. |
| Penny Chan (陳國峰) | Ngok Ching-hung
岳正雄 | Sheh Chuk-ching's lover who was manipulated by her to murder Mok Wai-fu. |
| Coffee Lam (林芊妤) | Elaine Ho
何景怡 | Sheh Chuk-ching's colleague. |
| Chung Chi-kwong (鍾志光) | Law Kai
羅階 | An insurance intermediary who pushed and injured Wong Fei-fei, later framing Kam Po-cheung for it before he was arrested. |
| Owen Cheung (張振朗) | Choi Chan-lit
蔡震烈 | A thug whom constantly bullies Chan Hok-suen after she reports on him for burglary in a supermarket and drove her to suicide. |
| Rachel Poon (潘曉彤) | Chan Hok-suen
陳學璇 | A high school student who once reported on Choi Chan-lit for burglarizing a supermarket and was victimized by him as a result, leading her to suicide. |
| Joseph Yeung (楊瑞麟) | Liu Chi-man
廖志文 | Father of Liu Kai-hei, who assaulted Yeung Piu, an arrogant punk who cut in front of him in line outside a sneaker store. |
| Coleman Tam (譚真一) | Liu Kai-hei
廖啟熙 | Liu Chi-man's son, who witnessed his father assaulting Yeung Piu. |
| Jonathan Cheung | Wat Ping-yuen
屈炳源 | A convict who was falsely accused for murder, resulting in a life sentence. With the help of JJ, he successfully appealed and was released without charge. |
| Kenneth Fok (霍健邦) | Wu Sing-keam
胡成昆 | Wong Fei-fei's husband who was arrested along with his wife for blackmail and giving false testimony. |
| Joey Law (羅天宇) | Edward Ho
何德華 | Pupil prosecutor under Chris. |
| Akina Hong (康華) | Lau Mei-yee
劉美儀 | Ai Mei-san's sister-in-law. |
| Kimmy Kwan (關婉珊) | Law Wing-yan
羅穎恩 | An office staff of an insurance company who was sexually harassed by her superior Wah Kam-on. |
| Law Tin-chi (羅天池) | Wah Kam-on
華錦安 | Law Wing-yan's superior who sexually harassed her during an anniversary event of the insurance company. |
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