Steenkamp's family have slammed the film, saying they were not consulted. "Any impression that this is June [Steenkamp]'s view, or that the movie was endorsed by the Steenkamp family, is untrue and incorrect."
Media Monitoring Africa director William Bird said he was unsure the Pistorius family had any basis to sue. The movie was upsetting, but not "a reasonable" basis for legal action.
Brendon Ambrose, of Spoor & Fisher, said Pistorius might base his challenge on his right to privacy since the film was unauthorised.
"Defamation of character is another option, but is difficult to prove and is dependent on how Oscar is portrayed in the film."