10 months before his parole hearing, on 17 February 1992, the judicial investigation into Kiszko's conviction began. It was heard by three judges, Lord Chief Justice Lane, Mr Justice Rose and Mr Justice Potts. Present at the hearing were Franz Muller QC and William Boyce for the Crown, who were there to argue that Kiszko was guilty of murder and therefore must remain in prison custody for at least another 10 months; and Stephen Sedley QC and Jim Gregory, to state that Kiszko was innocent. After hearing the new evidence presented by Sedley and Gregory, Muller and Boyce did not put up any contrary argument and immediately accepted its validity.