It was the last TV series from Fauna Productions, who were responsible for Skippy the Bush Kangaroo among others.
[1] FIASCO (The Federal Intelligence and Security Organisation) is a top-secret department whose existence was known only to a few and was answerable only to the Prime Minister.
Under the control of one time Scotland Yard cop Dave Shannon, the main characters were agents Andrew Blake (Robin Ramsay) and Michael Jamieson (Frank Gallacher) who often worked undercover.
Production of the series took place from October 1973 to May 1974, mostly in and around Sydney.
TV critic Don Storey wrote that "not only was Shannon's Mob Fauna's least successful production, it was one of the least remembered series of Australian television's first twenty years.