R v Cook; ex parte Twigg

The High Court of Australia heard an application for a writ of prohibition in *R v Cook; ex parte Twigg*. The applicant, Twigg, sought to prohibit the respondent, Cook, a magistrate, from proceeding with a committal hearing against Twigg on charges of conspiracy to defraud. The dispute centred on whether the evidence presented by the prosecution was sufficient to establish a prima facie case against Twigg, thereby justifying a committal for trial.

The central legal issue before the High Court was the standard of proof required at a committal hearing. Specifically, the Court had to determine whether a magistrate, in deciding whether to commit an accused for trial, must be satisfied that there is a prima facie case against the accused, or whether a lower threshold applies, such as whether there is some evidence upon which a jury, properly directed, might convict.

The High Court, by majority, held that the test for committal is whether there is evidence upon which a jury, properly directed, might convict. The Court reasoned that the role of the magistrate at a committal hearing is not to determine guilt or innocence, but rather to ascertain whether there is sufficient evidence to warrant putting the accused on trial. This involves assessing whether the evidence, if uncontradicted and unexplained, could lead a jury to find the accused guilty. The Court rejected the argument that a higher standard, requiring a prima facie case, was necessary, finding that such a standard would usurp the function of the trial jury.

The application for the writ of prohibition was dismissed.