 Forsyth was assigned to the Protocol Department, based in the Union Buildings, where she was approached by the National Intelligence Service (South Africa) (NIS).Forsyth joined the Security Branch of the South African Police in November 1981 during which time she was recruited by Craig Williamson and trained at the spy training center known as Daisy Farm.Forsyth operated at Rhodes University under cover as a student from 1982 until 1985, becoming a leader in anti-apartheid groups.