The Unwritten Law is a 1985 Hong Kong trial drama film directed by written, produced and directed by Ng Seeyuen and starring Andy Lau and Deanie Ip. The film was a critical and commercial success and was followed by two sequels. The Truth 1988 and The Truth Final Episode 1989. Because the film and its subsequent two sequels has displayed a touching mother and son love, Deanie Ip had the title of Andy Laus mother.
Rookie lawyer Raymond through Old Kwans Lau Siu Ming help, searches for evidence everywhere, the truth gradually unraveling the case, but also opposed by the father of his fiancee, and also the relationship with his fiancee gradually goes down. In an accident, Wai Lan saw Raymond possesses a pocket watch with bright future engraved on, a gift that she gave her son many years back and finds out Raymond was her son whom she took to Dean Marias orphanage. Wai Lan has not abandoned Raymond, she became a dance and anonymously cared for Raymond, and paid for his tutitions and summons for the University of London School of Law. Wan Lan worried about the exposure of her identity would ruin Raymonds honor and identity, she refused to let Raymond defend her.Raymond cannot accept that Wai Lan refused his defense, Wai Lan does not say anything, but under the persuasion of Old Kwan, Wai Lan finally agreed to let Raymond defense. Court offense and defense, Raymond logic clearly refutes, points out the contradiction of the allegations of witness, and the inference that the deceased is a sexual pervert, Raymond finds the victims of sexual abuse prostitutes to testify based on clues and also looked for the victims psychiatrist testified. The psychiatrist, however, denied that the victim is his patient. Fortunately, one of Raymonds orphanage mates, Tang Siu Fan, who is one of the nurses of the clinic, agrees to testify in court, and comes up with the medical records evidence that the victim is indeed his patient. ........
Source: Wikipedia