'Departmental is the story of a theft of money in a police station and the interrogation of two uniformed policemen. (The playwright is a policeman turned barrister.)
'There are only four characters in the play. Ray Barrett plays Superintendent Spartan, the officer leading the inquiry into the theft. Martin Vaughan (known for his mammoth role in Frank Hardy's Power Without Glory) plays Inspector Cook, assisting Spartan in the interrogation.
'The two uniformed police who are suspected of taking the money are played by Gary Day as Constable Mcllveney and Rod Williams as Constable Pyers.'
Source:
'Tough Roles Because I'm Ugly: Barrett', Australian Women's Weekly, 6 August 1980, p.125S. (Via Trove.)