Line Walker ( literally "Apostle Walker") is a 2014 Hong Kong crime thriller drama produced by TVB, starring Michael Miu, Charmaine Sheh and Raymond Lam as the main leads, with Sharon Chan, Benz Hui, Elena Kong, Sammy Sum, Oscar Leung and Toby Leung in major supporting roles. It is the first entry in the franchise.

The drama began broadcasting on August 25 to October 3, 2014, on TVB Jade channel during its 9:30–10:30 p.m. timeslot. In 2022, the drama was selected as one of ten classic TVB dramas being honoured for a new joint Youku and TVB programme.

Plot Set in Hong Kong, the drama follows the lives of Hong Kong Police's CIB undercover police agents who must live a double life in secrecy. Not knowing when they can return to their normal life, they must also endure the constant fear of being uncovered by those they are assigned to infiltrate. However, this time their lives are put in danger when it is discovered that a mole lives within the police force.

Cheuk Hoi (Michael Miu) is a Chief Inspector of Police (CIP) in Hong Kong Police's Criminal Intelligence Bureau (CIB) unit. He is a righteous supervisor that will resort to unofficial tactics in order to restore the identities of his undercover subordinates who have gone missing and deemed by the police department to have strayed to the criminal side. When he finds his friend Hong To Hang, a fellow Superintendent of Police (SP) in the CIB unit, thrown off a building under mysterious circumstances, he learns from Hong's dying words that there are moles within the police force working for the triads. In order to protect the lives of his five undercover agents, Hong has deleted their files from the police database, erasing their identities as police officers. Hong charges Hoi with the task of finding each lost undercover agent, but dies before he can tell Hoi any further information. Remembering Hong's warning against trusting anyone in the police force, Hoi keeps Hong's last words hidden from his superiors. Instead, he sets out on his own to find Hong's five undercover agents.

With clues left behind by Hong, Hoi finds undercover agent Ting Siu Ka (Charmaine Sheh) who fronts as an owner of a foot massage parlor, and assumes his role as her new handler. Siu Ka's only assignment under Hong was to gather intelligence but Hoi assigns her the task of helping him find the other four undercover agents. Siu Ka decides to get close to Sit Ka Keung (Raymond Lam), nicknamed Bao Seed who is part of an illegal gambling gang. He fronts as an ice deliveryman but is actually in charge of collecting unpaid gambling debts. Siu Ka previously clashed with Bao Seed and his partner Muk Sut when they went to her shop to collect a gambling debt but becomes friendly with them because she knows of their connection to a major triad organization.

Meanwhile, Kobe Lin Ho Kan (Sammy Sum), another undercover agent working for Hong, fronted as a crooked stock broker in order to go to prison and get close to triad boss Chum Foon Hei as the last assignment he received from Hong, but Foon Hei soon proved to be a cunning target. Unable to gain any traction with Foon Hei, Kobe believed he had failed his assignment. However upon Kobe's release from prison, Foon Hei asks Kobe to join his organization. In order for Kobe to follow through with his undercover assignment, Kobe sacrifices his relationship with ICAC officer Mok Sin Yan (Sharon Chan), who is unaware that Kobe is an undercover agent.

Yan investigates Hoi because she suspects that he is a dirty cop with connections to the triads because of his fast raise in the police force and all the cases he is assigned to as the Chief inspector gets foiled. With Yan tracking his every single move, it makes things complicated for Hoi to meet up with the undercover agents. In order to keep one step ahead, Hoi bugs Yan's personal belongings and overhears her personal life. Accidentally he discovers the abusive marital life of Yan's older sister Katie Mok Sin Ching (Elena Kong). While helping Katie to escape her abusive life, the two begin to get closer and eventually begin a relationship.

As Siu Ka continues to work with Bao Seed on missions for Foon Hei, she begins to develop feelings for Bao Seed. It is eventually revealed that Bao Seed is another undercover sent out by Hong. As the 3 undercover agents work together with Hoi, they start to suspect their handler is the mole; however, the 4th undercover, Ada (Skye Chan), was revealed and explained to them her relationship with Hong and Hong's intentions.

When Foon Hei's son dies from the karma of his bad deeds, Foon Hei began to change for the better. Hoi begins to suspect Yip Siu-leung (Patrick Tang) as the mole in the police force. Kobe warns Yan to be careful. At first Yan dismisses Kobe's warning as an act of jealousy; however, she decides to investigate on her own and finds evidence to confirm Hoi's suspicions. Siu-leung eventually finds Yan investigating him. Hurt and enraged, he decides to kill Yan who is saved by Kobe when he tackles Siu-leung off the roof of a building.

Cast

Main cast Cast Role Description Age Michael Miu 苗僑偉 Cheuk Hoi (Cheuk Sir) 卓凱 (卓Sir) Police's Criminal Intelligence Bureau (CIB) Chief Inspector of Police (CIP) Then he is promoted to CIB Superintendent of Police (SP) Police Handler for undercover agents Katie Mok Sin-ching Boyfriend later Husband 42Charmaine Sheh 佘詩曼 Ding Siu-ka (Ding Jie) 丁小嘉 (釘姐) Hung Ying Triad Leader after Sit Ka KeungPolice Constable (PC)Undercover Agent Owner of a foot massage parlour Foster Daughter of Rose Fung, Nancy Lau and Susie Choi Sit Ka Keung's Girlfriend 30Raymond Lam 林峯 Sit Ka-keung (Bao Seed) 薛家強 (爆Seed) Hung Ying Triad Leader after Foon Her Gor Police Constable (PC) Undercover AgentTing Siu Ka Boyfriend 30Sharon Chan 陳敏之 Mok Sin-yan, Yan 莫羨昕 Independent Commission Against Corruption (ICAC) Principal InvestigatorSister of Katie Mok Sin Ching Kobe / Lin Ho-kan Girlfriend 29Benz Hui 許紹雄 Chum Foon-hei (Foon Hei Gor) 覃歡喜 (歡喜哥) Hung Ying Triad Leader Former CIB Inspector of Police (IP) Shot in episode 25 55Sammy Sum 沈震軒 Lin Ho-kan / Kobe 連浩勤 Police Constable (PC) Undercover Agent Stock Broker Mok Sin Yan Boyfriend 30Elena Kong 江美儀 Mok Sin-ching, Katie 莫羨晴 Senior Public Prosecutor of the Department of Justice (DOJ) Sister of Mok Sin Yan Ex-wife of Richard Cheung Wing-kuen Become Cheuk Hoi's Wife 35Oscar Leung 梁烈唯 Cheung Muk-wing (Muk Sat) 張木榮 (木蝨) Sit Ka-keung good friend 28Toby Leung 梁靖琪 Chiu Mei-yin (Yin Chai) 趙美賢 (賢仔) CIB Inspector of Police (IP) Niece of Cheuk Hoi 22

Supporting cast

Hung Ying triad society Eddie Pang 彭懷安 as Yau Tat-fu 游達富, also known as "Taat Sa" (Flounder) 撻沙. Eddie Law 羅天池 as Lok Wai-na (Rottweiler) 洛威拿. Eddie Ho 何偉業 as Gwai Wong Chiu 鬼王超. Akai Lee 李啟傑 as Lee Kai-shing 李繼承, also known as "Chicken Shing" 雞成. Owen Cheung 張振朗 as Ah Fo "Fire" 阿火 Vincent Lam 林偉 as Chai Fing 猜Fing. Kitterick Yiu 姚浩政 as Ah Gau "Dog" 阿狗. Otto Chan 陳志健 as Cheung Yung 張勇 Kelvin Lee 李興華 as Tat-fu's gang member 游達富之下屬 Choco Ip 葉家泓 as Tat-fu's gang member 游達富之下屬

Criminal Intelligence Bureau (CIB) Lau Kong 劉江 as Kwok Hok-wah 郭學華, Chief Superintendent of Police (CSP) and head of CIB and dirty cop. Jimmy Au 歐瑞偉 as Hong To-hang 康道行, CIB Superintendent of Police (SP). Skye Chan 陳倩揚 as Ada Tse On-yee 謝安儀, ICAC Investigator and undercover Police Constable. K Nicole Wan 尹詩沛 as Yeung Wing-sze 楊詠絲, CIB officer Kelvin Chan 陳建文 as Pong Tsz-kit 龐志傑, CIB officer Lau Tin Lung 劉天龍 as Ng Wai-kwong 伍偉光, CIB officer

Organized Crime and Triad Bureau (OCTB) Patrick Tang 鄧健泓 as Marco Yip Siu-leung 葉兆良, OCTB Chief Inspector of Police (CIP), becomes CIB Superintendent of Police (SP) in episode 18 and dirty cop. Raymond Tsang 曾守明 as Lee Yat-shan 李日山 Jayden Kau Cheuk-nang 裘卓能 as Ching Yik-hei 程亦熙 Edgar Lam 林健生 as Mak Tsz-kit 麥子健 Leung Yan 梁茵 as Chung Chi-nei 鍾芷妮 Chloe Nguyen 阮兒 as Fung Ka-ling 馮嘉玲

Independent Commission Against Corruption (ICAC) Miguel Choi 蔡康年 as Ko Chin-nang 高展能 Mak Ka Lun 麥嘉倫 as Law Chun-yip 羅俊業 Moses Cheng 鄭詠謙 as Man Yan-chung 文仁松 Ng Kwong Lei 吳曠利 as Chow Lok-hei 周樂晞

Foot Massage parlour Mary Hon 韓馬利 as Rose Fung Wai-fong 馮慧芳, Ting Siu-ka's Foster Mother. Rosanne Lui 呂珊 as Nancy Lau Mei-ying 劉美鶯, Ting Siu-ka's Foster Mother. Ceci So 蘇恩磁 as Susie Choi Siu-lin 蔡笑蓮, Ting Siu-ka's Foster Mother.

Thai Mafia KK Cheung 張國強 as Sung Kam 崇金 Ankie Beilke 貝安琪 as Amrin On Lam 安琳 Yuang Cheung 章宇昂 as Ah Yum 阿鑫

Mr Song Society Chung King-fai 鍾景輝 as Chin Shui-on 錢瑞安, former Hong Kong Secretary of Security, mastermind behind Mr. Song's group. Stephen Huynh 黃長興 as James Pong Yin Ting 龐彥廷. Samantha Ko 高海寧 as Amy Lam Hei-mei 林希微, Undercover Agent and later turned black cop. Sam Tsang 曾航生 as Kelvin Lok Kei 骆祺, a barrister who represents dirty cops and Mr Song's group members. Law Lok-lam 羅樂林 as Keith Kwok Teng 郭正, Director of Public Prosecutions inside Department of Justice, and one of the masterminds of Mr Song's group.

Others Ken Law 羅浩銘 as Ah Tong 阿棠 Kenneth Fok 霍健邦 as Ying Ka-moon 刑家滿 Doris Chow 周麗欣 as Ho Wan-ying 何韵 Steven Ho 何啟南 as Richard Cheung Wing-kuen 張永權 Gemma Choi 蔡慧欣 as Richard Cheung's mistress 張永權之情婦 Alvin Lau 劉彥夆 as Chum Long Sing 覃朗星

Development and casting The sales presentation clip was filmed in October 2013. The original 57 second clip featured Michael Miu, Charmaine Sheh, Raymond Lam, Sharon Chan, Elena Kong, Sammy Leung and KK Cheung. "The Apostle" Filming Sales Presentation. Retrieved 7-30-2014 "The Apostle" @ TVB Sales Presentation 2014. Retrieved 7-30-2014 The sales presentation clip was unveiled on November 7, 2013, for 2014 drama sales pitch. TVB Sales Presentation 2014 Revealed. Retrieved 7-30-2014 Michael Miu and Raymond Lam Fight Corruption in “The Apostle”. Retrieved 7-30-2014 Movie king Tony Leung Ka-fai was originally cast in the drama, but had to withdraw due to a rib injury sustained during filming of Horse Play. Tony Leung Ka Fai withdraws from TVB drama A whole new script was written as a result. Costume fitting was held on February 28, 2014. The blessing ceremony took place on February 28, 2014, 2:00 p.m. at Tseung Kwan O TVB City "Line Walker" Blessing Ceremony. Retrieved 7-30-2014 Sammy Leung was originally cast to play the role "Lin Ho Kan", but had to withdraw during the middle of filming for health reasons. Sammy Sum replaced him, while Patrick Tang took on Sammy Sum's original role "Yip Siu Leung". With Sammy Sum taking over the role of "Lin Ho Kan", Sharon Chan had to re-film scenes with Sammy Sum that she had already filmed with Sammy Leung which caused production to be pushed back for a month. "The Apostle"'s Cast Supports Sammy Leung's Departure. Retrieved 7-30-2014 Joe Ma was rumoured to have been offered the role of "Lin Ho Kan". Once it was confirmed that the role was given to Sammy Sum, Joe released a statement on his Weibo account and stated during an interview with a reporter that he had turned down the role because "it was not fitting" for him. However, producer Man Wai Hung later clarified that he never contacted Joe about the role and did not understand where such a rumour came from.Joe Ma Unwilling to Fill Sammy Leung's Shoes, Turns Down "The Apostle", Sammy Sum Replaces. Retrieved 9-12-2014 On March 18, 2014, while filming a motorcycle scene, Sammy Sum fell and landed on his right hand which resulted to a wrist fracture. Medical attention was required and Sum was admitted to the hospital for surgery on March 21. Filming was delayed by a few weeks while Sum recovered. Sammy Sum Fractures Wrist While Filming “The Apostle”. Retrieved 7-30-2014 On March 24, 2014, an extended trailer of the drama was previewed at FILMART 2014.

Reception