A Turkish court will open the trial on Friday of 20 Saudi officials indicted over the 2018 killing of journalist Jamal Khashoggi, a step his fiancee hopes will shed more light on the death and reveal where his body was hidden.

The indictment by Istanbul prosecutors accuses the former deputy head of Saudi Arabia’s general intelligence, Ahmed al-Asiri, and former royal court adviser Saud al-Qahtani of instigating “premeditated murder with monstrous intent”, the prosecutor’s office said in March.