Question: Orchis Fatalis starred the actor and writer of what nationality?

full_context: Document 1: Dennis Potter: Dennis Christopher George Potter (17 May 1935 – 7 June 1994) was an English television dramatist, screenwriter and journalist.
Document 2: John Nettles: John Vivian Drummond Nettles, OBE (born 11 October 1943) is a British actor and writer. Nettles is perhaps best known for playing the lead roles in the long-running television series "Bergerac" and "Midsomer Murders".
Document 3: The Unicorn and the Wasp: "The Unicorn and the Wasp" is the seventh episode of the fourth series of the revived British science fiction television series "Doctor Who", which was aired by BBC One on 17 May 2008 at 19:00. Perhaps due to its later broadcast, it received an overnight audience rating of 7.7 million, making it the most successful episode in this series since "The Fires of Pompeii". The episode is a pseudohistorical story set in 1926, in a manor owned by a character named Lady Eddison, which crime fiction novelist Agatha Christie is visiting, and is a comedic episode with a murder-mystery storyline.
Document 4: List of Line of Duty episodes: "Line of Duty" is a BBC police procedural television series created by Jed Mercurio starring Martin Compston and Vicky McClure as Steve Arnott and Kate Fleming; detectives assigned to an elite anti-corruption unit designated AC-12. The stories follow investigations into suspected corrupt police officers, at the behest of Superintendent Ted Hastings (Adrian Dunbar). They are Lennie James as DCI Tony Gates, Keeley Hawes as DI Lindsay Denton, Daniel Mays as Sergeant Danny Waldron and Thandie Newton as DCI Roseanne Huntley. Numerous characters appear outside of their initial arcs, including Hawes' reprisal of her second series' role during series 3, and Craig Parkinson's reprisal of his first series' role during both series 2 and 3. To date, 23 episodes have aired, with the first and fourth series linked thematically, and the second and third series similarly connected: however, all series have a single overarching connection, with all series referring to the same criminal network involved in the events of each series' plot.
Document 5: Orchis Fatalis: "Orchis Fatalis" is the third episode of the eighth season of British television show "Midsomer Murders" and the thirty-eighth episode overall. It stars John Nettles as Detective Chief Inspector Tom Barnaby and John Hopkins as Detective Sergeant Dan Scott. It concerns the discovery of a very rare orchid, the yellow roth, and a number of murders seemingly committed in an attempt to acquire it.
Document 6: Spooks (series 3): The third series of the British spy drama television series "Spooks" (known as MI-5 in the United States) began broadcasting on 11 October 2004 on BBC One, before ending on 13 December 2004. It consists of ten episodes which continue to follow the actions of Section B, a counter-terrorism division of the British Security Services (MI5). It also sees the departure of three principal characters: Tom Quinn (Matthew Macfadyen) is decommissioned in the second episode, Zoe Reynolds (Keeley Hawes) is exiled to Chile in the sixth episode, and Danny Hunter (David Oyelowo) is killed in the series finale. In addition to Macfadyen, Hawes and Oyelowo, Peter Firth, Rupert Penry-Jones, Nicola Walker, Hugh Simon, Shauna Macdonald and Rory MacGregor are listed as the main cast.
Document 7: Inspector Morse: Detective Constable/Detective Sergeant/Detective Inspector/Detective Chief Inspector Endeavour Morse GM is the eponymous fictional character in the series of detective novels by British author Colin Dexter. On television, he appears in the 33-episode 1987–2000 drama series "Inspector Morse", in which John Thaw played the character, as well as the 2012 prequel series "Endeavour", portrayed by Shaun Evans. Morse originally is described as a senior CID (Criminal Investigation Department) officer with the Thames Valley Police force in Oxford, England. Morse presents, to some, a reasonably sympathetic persona, despite his sullen and snobbish temperament, with a Jaguar car (a Lancia in the early novels), a thirst for English real ale, and a penchant for music (especially opera and Wagner), poetry, art, classics, classic cars, and cryptic crossword puzzles. He is often assisted by his Sergeant Robert "Robbie" Lewis. Morse's partnership and friendship with Lewis is a fundamental aspect of the series.
Document 8: John Gardner (British writer): John Edmund Gardner (20 November 1926 – 3 August 2007) was an English spy and thriller novelist, best known for his James Bond continuation novels, but also for his series of Boysie Oakes books and three continuation novels containing Sir Arthur Conan Doyle's fictional villain, Professor Moriarty.
Document 9: Mad City: Blood Rush: "Mad City: Blood Rush" is the eighth episode of the third season, and 52nd episode overall from the Fox series "Gotham". The episode was written by Tze Chun and directed by Rob Bailey. It was first broadcast on November 7, 2016. In the episode, Barnes (Michael Chiklis) loses control of the effects of Alice Tetch's blood and begins to use his powers to target a killer, no matter the cost of those who stand in his way. Gordon (Ben McKenzie) is reinstated as detective and investigates along with Bullock (Donal Logue) the killer, who uses plastic surgery to fake identities. Meanwhile, Cobblepot (Robin Lord Taylor) tries to stop Isabella from continuing to see Nygma (Cory Michael Smith).
Document 10: The Damage a Man Can Do: "The Damage a Man Can Do" is the eighth episode of the third season of the American television drama series "Dexter", which first aired on November 16, 2008 on Showtime in the United States. The episode was written by Scott Buck and directed by Marcos Siega. In the episode, assistant district attorney Miguel Prado (Jimmy Smits) asks Dexter Morgan (Michael C. Hall) for his assistance in killing a murderous gambler. Meanwhile, Dexter's sister Ofr. Debra Morgan (Jennifer Carpenter) finds her boyfriend and informant Anton Briggs (David Ramsey) to be missing after she tells him that he is no longer legally obligated to work for her.
Document 11: Douglas Henshall: Douglas James Henshall (born 19 November 1965, Glasgow, Scotland) is a Scottish actor best known for his roles as Professor Nick Cutter in the British science fiction series "Primeval" and Jimmy Perez in crime drama "Shetland".
Document 12: David Jason: Sir David John White, {'1': ", '2': ", '3': ", '4': "} (born 2 February 1940), better known by his stage name David Jason, is an English actor and comedian. He is perhaps best known for his portrayals of Derek "Del Boy" Trotter in the BBC comedy series "Only Fools and Horses", and Detective Inspector Jack Frost in the ITV crime drama "A Touch of Frost".
Document 13: Michael Gambon: Sir Michael John Gambon {'1': ", '2': ", '3': ", '4': "} (born 19 October 1940) is an Irish-born English actor who has worked in theatre, television and film. Gambon has played the eponymous mystery writer protagonist in the BBC television serial "The Singing Detective", Jules Maigret in the 1990s ITV serial "Maigret", and Professor Albus Dumbledore in the final six "Harry Potter" films after the death of previous actor Richard Harris. He has won four BAFTA TV Awards and three Olivier Awards.
Document 14: The Inspector Lynley Mysteries: The Inspector Lynley Mysteries is a British crime drama, broadcast on BBC One from 12 March 2001 to 1 June 2008, encompassing six series and a total of twenty-three episodes. The protagonist, Detective Inspector Thomas "Tommy" Lynley, 8th Earl of Asherton (Nathaniel Parker), who is assigned to Scotland Yard, finds himself paired with Detective Sergeant Barbara Havers (Sharon Small). In addition to the tensions involved in solving murder cases, the series thrives on the characters' clashes regarding personality, gender, and class, as Lynley is dapper, male and a peer of the realm, while Havers is untidy, female and comes from a working-class background.
Document 15: Aruba: The Tragic Untold Story of Natalee Holloway and Corruption in Paradise: Aruba: The Tragic Untold Story of Natalee Holloway and Corruption in Paradise
ground_truth: British