Dickey v R - [2023] 2 NZLR 405

Sentencing — Murder — Approach to sentencing of youth murderers — Assessment of manifest injustice for youth murderers — Murders committed when defendants teenagers — Appeals against sentences of life imprisonment with minimum period of imprisonment of ten years — Whether manifestly unjust — Evidence of neurological differences between adults and young people — Adolescent brain development — Personal circumstances — Social deprivation and psychological conditions — History of murder sentencing — Sources of manifest injustice — Assessing manifest injustice — Setting determinate sentence and minimum period of imprisonment — Youth Criminal Justice Act SC 2002 c 1.