Breen v The Queen

In *Breen v The Queen*, the High Court of Australia considered an appeal by the applicant, Breen, against his conviction for the offence of conspiracy to defraud. The Crown alleged that Breen, along with others, had conspired to defraud the Commonwealth by dishonestly obtaining payments under the Commonwealth's wool marketing scheme.

The central legal issue before the High Court was whether the trial judge had erred in law by directing the jury that they could find the applicant guilty of conspiracy to defraud even if they were not satisfied beyond reasonable doubt that the applicant had personally intended to defraud the Commonwealth. Specifically, the court had to determine the requisite mental element for the offence of conspiracy to defraud, particularly in circumstances where the alleged co-conspirators may have had different intentions or levels of knowledge.

The High Court, in allowing the appeal, held that a conspiracy to defraud requires proof that each conspirator intended to defraud. The court reasoned that the offence of conspiracy is a joint enterprise, and therefore, each participant must possess the necessary guilty mind, or *mens rea*, for the substantive offence that is the object of the conspiracy. A mere intention to carry out the agreed course of conduct, without the intention to defraud, was insufficient to establish guilt for conspiracy to defraud. The trial judge's direction, which permitted a conviction based on the intention of the co-conspirators rather than the applicant's own intention, was found to be erroneous.

Consequently, the High Court quashed the conviction and ordered that a new trial be held.