Gwenda Marsh's scriptwriting career in the Australian television industry began in the early 1970s through Crawford Productions series such as Division Four (1972-74) and Matlock Police (1974-76). She later contributed episodes for the Matlock Police spin-off Solo One (1976) and for Bluey (1976-77). During the 1980s, Marsh wrote for A Country Practice (1982-83), Five Mile Creek (1984), The Flying Doctors (1986), and Prisoner (1986) among other shows. She was also a principal writer on the mini-series All the Rivers Run (1983).
In addition to writing for television, Marsh has been engaged as script editor for such series as Prisoner (1986), Chuck Finn (1999), Guinevere Jones (2002), and Parallax (2004); and has overseen a number of series as producer, including Skyways (1979), Holiday Island (1981), Zoo Family (1985), Ship to Shore (1993), and Chuck Finn (1999).
Set in a small, fictional, New South Wales country town called Wandin Valley, A Country Practice focused on the staffs of the town's medical practice and local hospital and on the families of the doctors, nurses, and patients. Many of the episodes also featured guest characters (frequently patients served by the practice) through whom various social and medical problems were explored. Although often considered a soap opera, the series was not built around an open-ended narrative; instead, the two one-hour episodes screened per week formed a self-contained narrative block, though many of the storylines were developed as sub-plots for several episodes before becoming the focus of a particular week's storyline. While the focus was on topical issues such as youth unemployment, suicide, drug addiction, HIV/AIDS, and terminal illness, the program did sometimes explore culturally sensitive issues, including, for example, the Aboriginal community and their place in modern Australian society.
Among the show's principal characters were Dr Terence Elliott, local policeman Sergeant Frank Gilroy, Esme Watson, Shirley Dean Gilroy, Bob Hatfield, Vernon 'Cookie' Locke, and Matron Margaret 'Maggie' Sloan. In addition to its regularly rotating cast of characters, A Country Practice also had a cast of semi-regulars who would make appearances as the storylines permitted. Interestingly, while the series initially targeted the adult and older youth demographic, it became increasingly popular with children over the years.
The Matlock Police series (originally simply titled Matlock) was commissioned from Crawford Productions by ATV-0, in response to the popularity of rival-network police dramas such as Homicide and Division 4. Crawford's was initially reluctant to create another police series, but ATV-0 pressured the company for some time. Eventually, Ian Jones and Terry Stapleton devised the concept of a regional (Victorian) police series to provide viewers with something different. The more relaxed atmosphere of the country-town setting also allowed the writers to delve into the private lives of the main characters, rather than focusing heavily on big-city organised crime. In this respect, the series was situated somewhere between Homicide/Division 4 and Bellbird. The series did, however, cover typical rural policing, including such issues as break and enters, domestic issues, itinerant workers, brawls, petty crime and robberies, road accidents, the occasional homicide, and cattle rustling. On other occasions, the Matlock police also assisted Melbourne police in locating criminals on the run (among other problems). The idea behind the show was to reflect the causes of crime in a small community and show the effects on both the community and the officers themselves.
The fictional town of Matlock (loosely based on Shepparton in Victoria) is situated inland on the Central Highway, approximately 160 kilometres north of Melbourne. Although the town's population is only seventeen thousand, this increases to around seventy-five thousand when the district is included. The Matlock Police Station is typical of a Victorian country town, with a Uniform Branch and a Criminal Investigation Branch (CIB). The CIB is headed by Detective Sergeant Vic Maddern, who grew up in the Matlock district and is an accomplished bushman. Second in command is Detective Allan Curtis, aged in his mid-twenties. Previously from Melbourne, Curtis has just been sent to his first country posting (against his will) when the series begins. Head of the Uniform Branch is Sergeant Bert Kennedy, an Englishman who migrated to Australia in 1950. A thorough but also easy-going man with a good sense of humour, Kennedy is married to Nell and enjoys the country life in Matlock, so much so that he has knocked back promotion to avoid moving to Melbourne. Several constables are attached to the Uniform Branch, but the most prominent is a motorcycle cop, Constable Gary Hogan, who performs a wide variety of duties. Hogan is about thirty, a friendly, easy-going person who grew up in the country and is always willing to help in whatever work is going.
Division 4, which Don Storey notes in Classic Australian Television was 'the only drama series on Australian television to rival the popularity of Homicide', was created as a vehicle for Gerard Kennedy, who had risen to popularity playing the complicated enemy agent Kragg in spy-show Hunter, after Tony Ward's departure left Hunter's future in doubt.
According to Moran, in his Guide to Australian Television Series:
The series differed from Homicide in being more oriented to the situation and milieu of a suburban police station staffed by a mixture of plainclothes detectives and uniformed policemen. This kind of situation allowed Division 4 to concentrate on a range of crimes, from major ones such as murder to minor ones such as larceny.
Though set in the fictional Melbourne suburb of Yarra Central, 'Sets were constructed that were replicas of the actual St Kilda police station charge counter and CIB room, with an attention to detail that extended to having the same picture hanging on the wall', according to Storey.
Division 4 ended in 1976. Storey adds:
Division 4's axing was a dark day for Australian television, as within months the other two Crawford cop shows on rival networks, Matlock Police and Homicide, were also axed. It was widely believed, and still is, that the cancellation of the three programs was an attempt by the three commercial networks--acting in collusion--to wipe out Crawford Productions, and consequently cripple the local production industry.