R v Wichman - [2016] 1 NZLR 753

Criminal practice and procedure — Police questioning — Scenario or Mr Big technique — Information to be provided to court by prosecution — Observation on need for regulation or independent oversight — Observations on when technique should be used.

Evidence — Confessions — Admissibility — Whether circumstances made unreliable confession likely — Whether “circumstances” included reliability of statement shown by independent evidence — Whether evidence obtained unfairly — Whether Practice Note on police questioning applied to undercover officers — Whether exclusion of evidence proportionate to impropriety — Evidence Act 2006, ss 28 and 30.