Mystery Files is a 1997 Hong Kong science fiction thriller television series produced by TVB and stars Gallen Lo as a biochemist who advocates scientific methods to refute superstitious theories, utilizing scientific theories to uncover the answers to a series of strange events.

Plot Peter Ko (Gallen Lo) is a university biochemistry professor who is calm and believes in science while opposes superstition. Carrie Man (Maggie Cheung) is a researcher and screenwriter for documentary programmes at a television station who has witnessed a series of strange events. By chance, the two have the opportunity to cooperate to discover the truth of a series of strange cases. Due to their different views, conflict and misunderstands arises from time to time during their cooperation. Eventually, they develop mutual understanding for one another and a relationship also blossoms. One time, during an attempt to save Peter, Carrie was stabbed to death. In order to resurrect Carrie back to life, Peter must venture into the fourth dimension.

Cast

The Ko and Siu family Wilson Tsui as Ko Chi-wing (高志榮), Peter's father who is psychic and travels through time to the present. Wong Fung-king as Ko Mok Wai-fong (高莫惠芳), Peter's mother who died at an early age. Alice Fung So-bor as Siu Wai San-san (邵衛姍姍), Siu Cheuk-nam's mother who is also Peter's adoptive mother. Gallen Lo as Peter Ko (高永賢), the main protagonist of the series, a university biochemistry professor who only believes in scientific theories and disregards superstition. Nick Cheung as Siu Cheuk-nam (邵卓男), Siu Wai San-san's son and Peter's adoptive younger brother who is a police inspector.

The Man family Lam Sheung Yee as Man Pak-kin (文栢堅), Carrie's father. Kitty Lau as Man Chan Siu-kuen (文陳少娟), Carrie's mother. Law Lan as Man Choi-tip (文彩蝶), Pak-kin's eldest sister and Carrie's aunt. Maggie Cheung Ho-yee as Carrie Man (文嘉利), a researcher and screenwriter for documentary programmes at a television station who collaborates with Peter to solve a series a strange cases and Peter's girlfriend. Simon Lo as Man Ka-ho (文嘉浩), Carrie's younger brother who is a student of Peter.

University Tai Siu-man as Frankie, Peter's homosexual friend who is a professor. Emily Kwan as Pauline Leung (梁愛晶), Peter's assistant who develops a relationship with Cheuk-nam, become Siu Cheuk-nam's girlfriend. Isaac Ng as Ka-ho's classmate. Eric Li as Ka-ho's classmate. Cheung Hak as Ka-ho's classmate.

Television station Marco Ngai as Benny Ngai (魏國鋒), Carrie's superior and ex-boyfriend who is a good friend of Peter. Sher Ng as Lee Chau-ping (李秋萍), Carrie's colleague. Lo Cheuk-nam as director. Wong Kin-fung as a program host. Bruce Li as Householder Lee (李居士). Leung Kin-ping as a program host. Ho Mei-ho as a program host. Chan Cho-kiu as a program host. Yau Piu as Carrie's colleague. Tong Chun-ming as Carrie's colleague. Suen Yan-ming as Carrie's colleague. Law Suet-ling as Carrie's colleague. Wong Man-piu as Kelvin, a security guard. Ling Lai-man as the chief producer.

Police force Cheung Hon-pan as a CID officer. Luk Hei-yeung as a CID officer. Deno Cheung as a CID officer. Esther Wan as a CID officer. Lau Wing-chun as a CID officer. Lui Wing-yee as a CID officer. Cheung Chun-wah as a CID officer.

Other cast Shek Wan as a security guard. Law Kwan-ho as Hon (阿漢). Ben Wong Tin-tok as Ray, Pauline's older cousin who is a doctor. Siu Yuk-yin as Lily Akina Hong as Helen, Benny's ex-girlfriend. Lung Chi-sing as Law Kau (羅球), a scamming fortune teller. Chan Min-leung as Fat (阿發).

Themes and Cases

The Statue (神像; Episodes 1-3)

Plot Peter meets up with his mentor, Law Wang-chi (Wong Wai) and reminiscent the past. Law's daughter, Pui-ling (Winnie Yeung), recently returned to Hong Kong gives a statue to her father as a gift. One day, their housemaid, Sister Heung (Lily Liu), develops hallucinations and was sent to the hospital for treatment. Chau-ping and Carrie interviews Sister Heung about her experience, while Peter also appears in the television program to give an explanation from a scientific point of view. As a result, Peter and Carrie opposes each other. One day, Carrie buys necklace in the streets from Nip Hung (Samuel Yau). However, Carrie's aunt, Choi-tip, claims the god idol on the necklace is related to a murder case. Later, Law's wife, Wai-chun (Ceci So), also develops hallucinations and kills herself from jumping off a building. Carrie interviews Law about the incident, but Law suddenly acts like a demon and dies from a heart attack. Carrie's father, Pak-kin, researches about the statue and Carrie discovers the statue being cursed. Peter retrieves the statue from Pui-ling for research and he sees the spirit of his deceased mother while driving, leading to a car crash which fortunately only left Peter with minor injuries. Later, Carrie obtains her driver's license and was scammed while purchasing an antique car. When Pui-ling decides to return to Los Angeles, she gives the statue to Peter, who analyzes it with his friends and discovers many channels in it. One time when Peter drives Carrie home, he sees Law Kau, who once scammed him. Peter then reveals to Carrie that in the past, Kau gave a taoist charm to his mother to treat her illness, but his mother died from her illness, leading him to hate superstition. Later, Hung steals the statue and fights with his sister, Ling (Lee Kwi-ying). Hung gives the statue to Carrie, who develops hallucinations and was nearly run over by a truck but was saved by Peter. When Ling attempts to pick up the statue from the road, she was electrocuted to death. Eventually the statue was brought back to the tomb, but Peter suspects the statue causes subconscious fear.

Cast Wong Wai as Law Wang-chi (羅宏志), Peter's mentor. Ceci So as Law Lee Wai-chun (羅李慧珍), Law's wife. Winnie Yeung as Law Pui-ling (羅珮玲), Law's daughter. Cheng Ka-sang as Wong Tai-yung (王大勇), a grave-robber who stole the statue in 1976, which gave him hallucinations and became a serial killer. Lily Liu as Sister Heung (香姐), Law's housemaid who develops hallucinations from the statues and sees killings by the Japanese army. Yau Man-sing as Nip Hung (聶雄), Wong Ta-yung's descendant. Lee Kai-ying as Nip Ling (聶羚), Wong Ta-yung's descendant.

The Guardian Angel (守護天使; Episodes 3-4)

Plot Fong Chi-yan (May Kwong) is a new colleague at the television station. One time while buying midnight snacks, Chi-yan ran into two punks, Wong Yik-sing (Yu Lok-fai) and Chan Sai-wing (Law Cho-ho). When her grandfather, Fong Kwai-kit (Cheung Ying-choi), attempts to save her, he was attack and got into a coma. When Carrie brings Benny home, she loses her antique watch. Benny, feeling guilty, then begs Peter for his collector's watch, and Benny starts to pursue Carrie. Later, Yik-sing and Sai-wing wants revenge and rapes Chi-yan. Chi-yan becomes traumatised and temporarily moves in with Carrie, who discovers Chi-yan's sleepwalking habits. Yik-sing and Sai-wing were then murdered and Chi-yan's boyfriend, Lai Ka-leung (Ruco Chan) becomes the primary suspect. Ka-leung then breaks up with Chi-yan and takes her necklace, leaving her heartbroken. Kwai-kit then appears in Ka-leung's house and kills him, terrifying Ka-leung's new girlfriend Winnie (Wong Hoi-sze). Peter later discovers Chi-Yan s grandfather clothes stained with powder present in Ka-leung's home, but Victor (Ram Chiang) claims The grandfather was not at the scene. Cheuk-nam investigates Chi-yan's home and fins the necklace that Ka-leung took back present. Later, Peter's assistant, Pauline gives him a pen as a gift, which Peter then gives it to Chi-yan, who mistakenly believes that Peter has feelings for her. One time while visiting her grandfather, Chi-yan falls asleep at the hospital room, but wakes her finding her grandfather gone. She then sees her grandfather strangling Peter at the parking lot and she faints, waking up at the hospital room, discovering that her grandfather has died. Peter does not believe Kwai-kit was culprit of the attack.

Cast May Kwong as Fong Chi-yan (方紫欣), Carrie's new colleague who had a crush on Peter at one point. Cheung Ying-choi as Fong Kwai-kit (方貴傑), Chi-yan's grandfather whose spirit was the culprit behind the murders. Chu Lok-fai as Wong Yik-sing (王德成), a punk who attacked Kwai-kit and raped Chi-yan before being murdered by the former. Law Cho-ho as Chan Sai-wing (陳世榮), a punk who attacked Kwai-kit and raped Chi-yan before being murdered by the former. Ruco Chan as Lai Ka-leung (賴家亮), Chi-yan's ex-boyfriend who was killed by Kwai-kit. Wong Hoi-sze as Winnie, Ka-leung's new girlfriend who gone mad after witnessing Kwai-kit kill her boyfriend.

The Genius Idiot (天才白痴, Episodes 4-6)

Plot Benny and his ex-girlfriend Helen gets back together behind Carrie's back. Victor was later involved in a car accident, which lead him to see flashing footage in his brain where a jewelry shop employee being killed and Cheuk-nam being shot. A real robbery occurs where Cheuk-nam was unharmed but the robbers, Chan Po (Pal Sinn) and Fung (Celine Ma) escapes. Po also kills undercover officer Sing (Lam Kim-fung). When Victor was playing tennis with Peter, he sees Sing being buried and asks Peter and Carrie to accompany him to find Sing's corpse. Benny goes to vacation with helen in Cheung Chau and lies that he is playing golf with Peter in Shenzhen. Carrie finds out and breaks up with Benny. Victor's personality changes and his mother, Fong (Lily Li), goes to Peter for help as she suspects that his son is possessed by his older twin brother. Peter suspects Victor's twin brother is still alive and Carrie makes a call to Dongguan to confirm the matter. Victor feels Po's position and they meet up, revealing them to be brothers. Po also meets with Fong. Later, Po commits a crime and injures his arm before being murdered, which was witnessed by Victor. One day, Victor and Fong goes to worship Po in the cemetery and Victor seems to be possessed by Po. Victor goes to a nightclub and kills Po's underling, Kwai (Lee Ka-keung), and afterwards, goes to the villa to attack Fung. fung manages to escape and was brought to the hospital. Carrie believes Victor will kill Fung at the hospital and she rushes there with Peter, but they find Fung killed once they arrived. Victor also holds Carrie hostage and Peter attempts to persuade Victor, but Victor goes mad and Carrie manages to escape from him. Victor was then arrested and doctors believed Victor had developed schizophrenia.

Cast Ram Chiang as Victor Lee (李子建), a doctor who suffers from schizophrenia. Lily Li as Fong (阿芳), Chan Po and Victor's mother. Lee Wong-sang as Officer Wong (王Sir), Sing's superior. Pal Sinn as Chan Po (陳波), born Lee Chi-chiu (李子超), Victor's older twin brother. Celine Ma as Fung (阿鳳), Chan Po's girlfriend who eventually betrays and murders him before being murdered by Victor. Lam Kim-fung as Sing (阿星), an undercover police officer who was killed by Po after his cover was blown. Lee Ka-keung as Kwai (阿桂), Po's underling who schemes with Fung to murder Po before being murdered by Victor.

Reincarnation (輪迴; Episodes 7-9)

Plot