Frontline replaced Close Up as TVNZ’s flagship, primetime current affairs show in 1988. Fronted by Ross Stevens, and made at Avalon at a time when TVNZ management had relocated to Auckland, it produced the controversial 1990 doco For the Public Good which explored the relationship between business and the Labour Government. In the fallout, TVNZ was sued, staff were sacked and the office moved to Auckland. In 1994, a special about the Winebox tax allegations saw Frontline back in the news. Other presenters included Lindsay Perigo, Anita McNaught and Susan Wood.
Hour-long prime time current affairs slot Assignment replaced TVNZ's long-running Frontline in 1995, after Frontline had won controversy for a couple of its stories. A number of Frontline veterans moved across to the new series, including Susan Wood, Rod Vaughan, and Rob Harley. Vaughan and Harley would both win local media awards for their Assignment investigations. At the 1996 TV Guide New Zealand Film and Television Awards, Assignment was judged Best News and Current Affairs Programme.