Seven years ago, a majority of the High Court in Tofilau v R [2007] HCA 39 upheld four Victorian convictions founded on an unusual criminal investigative method. The method (known in Australia as ‘scenario’ evidence) is for undercover police officers to recruit suspected criminals into fake criminal gangs and then trick them into confessing real crimes by telling them that such confessions are a requirement for membership. After further prompts (such as staged inquiries from real police and promised aid from ‘corrupt’ police), the scenario culminates in a detailed, videotaped interview with the gang’s ‘boss’, after which the sting is revealed to the stunned suspect. This astonishing method (whose details can only be published thanks to a 2005 High Court ruling rejecting a publication ban) was developed in Canada, and the High Court in 2007 relied heavily on its repeated endorsement by the Canadian Supreme Court in upholding its use here.

However, last week, Canada’s top court unanimously changed its mind Continue reading →