R v Gwaze - [2010] 3 NZLR 734

Criminal practice and procedure — Appeals by prosecution — Whether and when new trial to be ordered — Whether double jeopardy to be considered — Crimes Act 1961, s 382.

Evidence — Admissibility — Whether matter of fact or law — Evidence Act 2006, s 6.

Evidence — Admissibility — Relevance — Reliability — Hearsay — Opinion — Whether hearsay statements made by expert relevant and reliable — Whether opinion substantially helpful — Probative value and prejudicial effect on proceedings — Evidence Act 2006, ss 7, 8, 17, 18, 23 and 25.