that the verdicts have been reached upon proper grounds. We do not think that this is a case in which we should order a new trial. There was, of course, evidence upon which a jury properly directed could have found the appellants guilty on the third count, and in ordinary circumstances it would have been proper to order a new trial. The present case is, however, complicated by the verdict on the first and second counts. We have no power to set aside a judgment of acquittal following a verdict of not guilty, and, consequently, we cannot order a new trial on all three counts. If we had the power we would do SO
On a new trial confined to the third count, Prior's story will have to be told again at length, in order to make it intelligible. In directing the jury afresh, the presiding judge must warn the jury against the danger of acting on his evidence. It will also be necessary to tell them that, as between the Crown and the accused, it has been conclusively estab- lished that they did not kill Mrs. Boulton and, further, that they did not conspire with Prior and Mrs. Boulton to procure her mis- carriage. With these directions, doubt will immediately arise as to Prior's story, and the judge is likely to feel that he ought to advise the jury not to convict."
The Crown applied for special leave to appeal to the High Court. Hannan K.C. (with him Chambertain K.C. and Kearnan) for the applicant. A verdict of not guilty is not a final acquittal on all issues. Acquittal is no kind of estoppel (R. v. Ollis 1 ). The Court of Criminal Appeal has, in effect, decided that acquittal on one ground excludes any other charge based on the same facts and has tried to introduce into the law a kind of "criminal estoppel." There is no such thing. There is only autrefois acquit or autrefors convict. An acquittal proves nothing and does not establish inno- cence (Helton v. Allen 2 ) ). Prior's story was not rejected, and the Court of Criminal Appeal erred in failing to see that the verdicts of the jury were consistent. The killing might have been done by a fifth person, and on that, and other hypotheses, there was no inconsistency. That there is no criminal estoppel is shown by R. v. Coventry 3.
The following judgments were delivered :-
LATHAM C.J. I have the misfortune to differ in opinion, though not very strongly, from my colleagues as to whether we should exercise our discretion by granting special leave to appeal in this
1(1900) 2 Q.B. 758, at p. 764.
2(1940) 63 C.L.R. 691, at p. 710.
3(1938) 59 C.L.R. 633.