First colour, all-film episode.
The scene of Peter Barnes receiving his police valour medal (for defusing a bomb strapped to the chest of a criminal, as occurred in the previous episode) was filmed at an actual police ceremony, the segment being shot at the end of the real-life proceedings.
Although this is the first episode to be produced in colour, it is not the first episode to be recorded entirely on firm - that honour is held by the episode Flashpoint (1966), which first went to air in 1966 and consisted entirely of filming on location without using any studio scenes.
After it was announced that colour television broadcasts would commence in Australia in early 1975, Homicide became the second Crawford Productions series to be produced in colour when it made the switch in October 1972. The first was private eye series Ryan (1973), which used colour from the beginning of its production in July 1972. The two other police drama series being produced by Crawford Productions at the time would also change to colour production the following year, with Division 4 (1969) making the change in January 1973, followed by Matlock Police (1971) around March or April 1973.