A recent submission to the Senate Standing Committee on Constitutional and Legal Affairs said this about the Australian law of criminal procedure:
The recent law of criminal investigation is governed by a confusing “amalgam of common law, statutory law, court-directed practices and internal police regulations” .... A policeman’s non-observance of [a citizen’s rights] may lead to internal disciplinary procedures, but it does not constitute an offence nor give the suspect a cause of action [or, necessarily lead to exclusion of the evidence].
Several months of studying the law of criminal investigation in Australia have led me to agree with this conclusion. It is the purpose of this article to discuss what that law is, but to do so in the only context that has any meaning in the real world of law enforcement. That is, in the context of remedies, specifically exclusionary remedies, for police misconduct.