The role of the Bangerang people in the environment of Matlock is built into the premise of the program. The Matlock Police show 'bible', held in the Crawford Collection, includes the following information under 'History':
'The first occupants of the country that is now Matlock and district were the people of the Bangerang tribe, a branch of the proud and warlike Murray race. Reminders of their thousands of years of occupation can be found in "canoe trees" in the river forest, "kitchen middens" or campfire sites along the river and round the lake, and in the several hundred half-caste Aboriginal people who still live in varying states of de-tribalized poverty in Matlock and its outskirts.'
The script for this episode held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'ALBY FORBES: (50s) "The Bangerang Prince". A quiet, somewhat mysterious aborigine [sic].
'EDGAR: (Established character).
'ALFRED NOBLE: (50s) A very distinguished Melbourne lawyer, believed missing, possibly murdered.
'GRANT: A somewhat sardonic Homicide detective, up from Melbourne to investigate Noble's disappearance.
'MILKINS: A comical farmer.
'CLERK (male): (18)
'SHIRL: (Established character)
'PUBLICAN-ALF: (Established character)
'MARK: Biology teacher, and expert on snakes.
'SMITH: Plumber.
'JUNKER: Drinker at pub.
'RATLAND: Drinker at pub.
'MRS. SLICK: Lives nextdoor [sic] to the police station. Non-speaking role.
'PRETTY GIRL: Non-speaking role.
'MOTORCYCLIST: One scene. Non-speaking role.
'MAN IN PARK:
'SOLO 4 VOICE OVER:
'DRINKERS EXTRA 2 ONLY.
'UNI. POLICE CONSTABLES EXTRAS - 2'.