Shrien Dewani will find out later today if he will stand trial for plotting to murder his wife.
Dewani allegedly ordered a hitman to kill his wife Anni, during their honeymoon in South Africa in 2010.
Anni's family fear it will be a "terrible development" if the people of South Africa do not hear the full story, after a four-year wait.
Taxi driver Zola Tongo, Mziwamadoda Qwabe and gunman Xolile Mngeni have already been convicted for their roles in the murder.
Prosecutors argue Dewani, who is bisexual and admitted relationships with gay men at the start of the case on 6 October, wanted to escape marriage and arranged the hit.
Speaking at a press conference, Anni's brother Anish Hindocha, said: "If they are not given the full facts, and by that I mean Shrien Dewani telling the court his version, then Anni's death will remain on the conscience of South Africa forever."
Judge Jeanette Traverson, who has been considering the evidence since 25 November is due to announce her decision at 8am.
Businessman Dewani could return to the UK if the judge decides to dismiss the case against him.