Citation: R v Philip Wan Por Leung [2011] NSWSC 785
Court: Supreme Court of New South Wales
Date: 29 July 2011
Judge: Adams J
Background
The accused stood trial for the manslaughter of his partner, who died on 7 April 2007. The deceased was found lying at the foot of a steep, narrow staircase in the couple's home, and resuscitation efforts were unsuccessful. The accused was discovered cradling the deceased's body, in a state of extreme distress.
The Crown case was circumstantial. Evidence included a neighbour's account of hearing sounds consistent with objects falling and a shout, the accused's fragmented and distressed statements to police, and the presence of a juicer bowl near the body with what appeared to be a blood-like stain. The pathologist concluded that death resulted from blunt force injury to the head and/or neck, but could not identify a single definitive cause or mechanism.
At the close of the Crown case, the trial judge directed the jury to return a verdict of not guilty. Adams J delivered these reasons to explain that direction in detail.
Legal Issues
- Whether the evidence, taken at its highest for the Crown, was sufficient to sustain a guilty verdict, or whether any path to conviction would necessarily involve impermissible conjecture.
- How the standard for directing a verdict of acquittal applies in a circumstantial case where multiple factual possibilities remain open.
- Whether significant gaps in the Crown case, particularly as to cause of death and whether any fatal act was deliberate, could be bridged by legitimate inference rather than speculation.
Decision
Adams J set out the applicable test from Doney v The Queen (1990): a trial judge must direct an acquittal if the evidence cannot sustain a guilty verdict, that is, if there is no evidence upon which a jury could properly convict. In applying this test, evidence favouring the accused is disregarded, and questions of credibility and reliability are left to the jury. Equally, the mere availability of a hypothesis consistent with innocence does not in itself justify a directed acquittal if sufficient evidence supporting guilt otherwise exists.
The central difficulty in this case was the state of the medical evidence. The pathologist's conclusions were subject to significant uncertainty, including a 24-hour window within which the relevant injuries may have been sustained. This substantially weakened the Crown's earlier reliance on the proposition that a fall down the stairs could not alone account for all injuries. The combination of an uncertain cause of death and an unclear mechanism made it impossible to identify what specific act, if any, the accused had committed.
Beyond the medical evidence, the factual picture raised numerous unresolved questions: whether the juicer bowl was thrown, by whom, and whether it caused any relevant injury; whether the deceased fell down the stairs and, if so, whether the accused caused that fall deliberately, accidentally, or in self-defence. Each possible line of reasoning contained substantial gaps, and pursuing any one of them required choosing between competing inferences without an adequate evidentiary foundation.
Adams J concluded that the evidence, taken at its highest for the Crown, inevitably left gaps that could not be bridged without impermissible conjecture. While acknowledging that there is no bright line between permissible inference and conjecture, his Honour held that a guilty verdict in this case would necessarily cross that line. A directed verdict of acquittal was accordingly entered.
Orders Made
- The jury was directed to return a verdict of not guilty, and the accused was acquitted of manslaughter.
Key Takeaways
- A trial judge must direct a verdict of acquittal where, even taking all Crown evidence at its highest and disregarding evidence favouring the accused, a guilty verdict would necessarily rest on impermissible conjecture rather than legitimate inference.
- In a circumstantial case, the availability of a hypothesis consistent with innocence does not itself compel a directed acquittal; the question remains whether the evidence, properly considered, is capable of sustaining a conviction.
- Where multiple competing lines of reasoning are available and each contains substantial evidentiary gaps, the cumulative effect is to increase, not reduce, uncertainty, and a directed verdict may be warranted.
- New or revised medical evidence presented at a retrial can fundamentally alter the strength of a Crown case; here, evidence about a 24-hour injury window significantly diminished what had earlier appeared to be a key plank of the prosecution.
- The distinction between conjecture and common sense inference is, as Adams J acknowledged, a matter of fact and degree in each case, and does not admit of a precise rule.
Legislation and Cases Referenced
Cases:
- Doney v The Queen [1990] HCA 51; (1990) 171 CLR 207
- R v R (1989) 18 NSWLR 74
- Haw Tua Tau v Public Prosecutor [1982] AC 136
- Attorney-General's Reference (No 1 of 1983) [1983] 2 VR 410
- R v JMR (1991) 57 A Crim R 39
- May v O'Sullivan [1955] HCA 38; (1955) 92 CLR 654
- Wilson v R (1992) 174 CLR 313
Legislation: No legislation was cited in the judgment.