Title: A Perfect Murder
Content: Michael Douglas as Steven Taylor ; Gwyneth Paltrow as Emily Bradford Taylor ; Viggo Mortensen as David Shaw ; David Suchet as Detective Mohamed Karaman ; Sarita Choudhury as Raquel Martinez ; Constance Towers as Sandra Bradford ; Novella Nelson as Ambassador Alice Wills ; Michael P. Moran as Bobby Fain ; Gerry Becker as Roger Brill ; Will Lyman as Jason Gates 
Title: A Perfect Murder
Content:  A Perfect Murder is a 1998 American crime thriller film directed by Andrew Davis and starring Michael Douglas, Gwyneth Paltrow, and Viggo Mortensen. It is a remake of Alfred Hitchcock's 1954 film Dial M for Murder, though the characters' names are all changed, and over half the plot is completely rewritten and altered. Loosely based on the play by Frederick Knott, the screenplay was written by Patrick Smith Kelly.
Title: The Perfect Murder (1988 film)
Content:  The Perfect Murder is a 1988 English-language Indian film directed by Zafar Hai and  produced by Merchant-Ivory. The film is based on the 1964 novel The Perfect Murder by British crime fiction writer HRF Keating and stars Naseeruddin Shah as Inspector Ghote, the leading character in Keating's novels. Swedish actor Stellan Skarsgård as well as many noted Indian actors such as Madhur Jaffrey, Amjad Khan, Dalip Tahil, Ratna Pathak, Annu Kapoor and Johnny Walker also appear in the film.
Title: The Perfect Murder (2019 film)
Content:  The Perfect Murder is a 2019 urban crime drama short film, written and directed by Vikkramm Chandirramani     featuring Rohan Gandotra, Samvedna Suwalka, Niharica Raizada and Deepak Daryani. It was released on January 30, 2019 on the YouTube channel of Quest Mercury and has since crossed 1 million views. A preview of the film was held at The View, Andheri on January 26, 2019.
Title: Perfect Murder, Perfect Town
Content: Executive producers – Lawrence Schiller, Richard Waltzer ; Original music – John Cacavas ; Cinematography – Peter Sova ; Production design – Steven Legler ; Art direction – Kevin Egeland ; Set decoration – Eric Weiler ; Costume design – Marilyn Matthews 
Title: Perfect Murder, Perfect Town
Content: Kris Kristofferson – Lou Smit ; Marg Helgenberger – Patsy Ramsey ; Ronny Cox – John Ramsey ; Dyanne Iandoli – JonBenét Ramsey ; Tyler Sharp – Burke Ramsey ; Scott Cohen – Steve Thomas ; Ken Howard – Alex Hunter ; John Heard – Larry Mason ; Peter Friedman – Peter Hofstrom ; John Rubinstein – Rev. Hoverstock ; Jane Powell – Dance Instructor ; Dennis Boutsikaris – Chief Koby ; Ann-Margret – Nedra Paugh The case includes:
Title: The Perfect Murder (1988 film)
Content: Naseeruddin Shah as Inspector Ganesh Ghote ; Stellan Skarsgård as Axel Svensson ; Amjad Khan as Lala Heera Lal ; Madhur Jaffrey as Mrs. Lal ; Annu Kapoor as Tiny Man ; Archana Puran Singh as Miss Twinkle ; Dalip Tahil as Dilip Lal ; Sakina Jaffrey as Nina Lal ; Dinshaw Daji as Mr. Perfect ; Johnny Walker as Jain ; Mohan Agashe as A.C.P. Samant ; Rajesh Vivek as Zero Police ; Ratna Pathak as Pratima Ghote (as Ratna Pathak Shah) ; Salim Ghouse as Caste-Marks Goonda ; Sameer Kakkad as Felix Sousa ; Vinod Nagpal as Minister ; Gopi Krishna as Dance Master ; Pearl Padamsee as Nurse ; Lilliput as Short Man-Goonda ; Imaad Shah as Ved Ghote (The little child) 
Title: Perfect Murder, Perfect Town
Content:  that Patsy has frequently displayed without giving a melodramatic performance herself — that's an achievement, even in a big piece of schlock like Perfect Murder ... Taking into account acting performances, script, and direction, Perfect Murder, Perfect Town averages out to a C; combine it with the F-grade moral scruples it took to embark on this exploitive abomination in the first place, however, and you get an all-too-generous D." Caryn James of The New York Times called the film "leaden" and "competently made but dull", but praised Marg Helgenberger and Scott Cohen. She said they "rose above the script" while calling Ronny Cox bland and Kris Kristofferson drab.
Title: The Perfect Murder (novel)
Content:  The Perfect Murder is a crime novel by H. R. F. Keating. The novel is the first appearance of Keating's serial detective, Inspector Ghote of Mumbai police, in which his investigation of the apparent murder of the Parsi Mr Perfect was assisted informally by the Swedish UNESCO analyst Axel Svensson. The novel, which Keating wrote without ever having been to India, won a Crime Writers' Association Gold Dagger Award in 1964. It was adapted into a film in 1988 produced by Merchant Ivory starring Stellan Skarsgård as Svensson and Naseeruddin Shah as Inspector Ghote.
Title: A Perfect Murder
Content:  A Perfect Murder received mixed reviews from critics: Stephen Holden of The New York Times called it a "skillfully plotted update of Frederick Knott's play". Owen Glelberman of Entertainment Weekly commented, " I’ve seen far worse thrillers than “A Perfect Murder,” but the movie is finally more competent than it is pleasurable. All that lingers from it is the color of money." Rita Kempley of The Washington Post noted, "The trouble is, we don't really much care about this philandering billionaire glamour puss, who seems perfectly capable of taking care of herself. We don't care about her husband or lover either. The story's most compelling character, an Arab American detective (the superb British actor David Suchet), becomes a minor player here. Nevertheless, like John Williams in the Hitchcock film, Suchet commits the film's only believable crime: He steals the show." Paul Clinton of CNN observed, 

Question: Who was the screenwriter for A Perfect Murder?
Answer: Frederick Knott.
Frederick Major Paull Knott.