It went for 70 minutes and was produced by Robert Allnut from a script by Denys Burrows.
Lucullus, fearing a scandal, sends his most trusted man to make a discrete inquiry.
They meet Leah, the daughter of a Jewish scholar, who has also embraced the new religion.
The son and Leah make Marcus understand the new faith that is changing the world.
The production was entirely shot on location - it was believed this was the longest TV play to be done in this manner in Australia.