delivered the opinion of the Court.
At the close of the prosecution’s case in chief, the trial court dismissed certain charges against petitioners on the ground that the evidence presented was legally insufficient to support a conviction. The question presented is whether the Double Jeopardy Clause bars the prosecution from appealing this ruling.
I
Petitioners, husband and wife, owned a building housing a restaurant and some apartments that burned under suspicious circumstances, killing two of the tenants. Petitioners were charged with various crimes in connection with this fire, including criminal homicide, reckless endangerment, and causing a catastrophe. 1 They opted for a bench trial, and at the close of the prosecution’s case in chief challenged the sufficiency of the evidence by filing a demurrer pursuant to Pennsylvania Rule of Criminal Procedure 1124(a)(1). 2 The trial court sustained petitioners’ demurrer to charges of murder, voluntary manslaughter, and causing a catastrophe, stating:
“As the trier of fact and law, the court was not satisfied, after considering all of the facts together with all reason *142 able inferences which the Commonwealth’s evidence tended to prove, that there was sufficient evidence from which it could be concluded that either of the defendants was guilty beyond a reasonable doubt of setting or causing to be set the fire in question.” App. to Pet. for Cert. 101a-102a.
The Commonwealth sought review of this ruling in the Superior Court of Pennsylvania, but a panel of that court quashed the appeal, holding it barred by the Double Jeopardy Clause. The Superior Court granted review en banc and affirmed.
The Commonwealth appealed to the Supreme Court of Pennsylvania, which reversed.
Commonwealth
v.
Zoller,
“In deciding whether to grant a demurrer, the court does not determine whether or not the defendant is guilty on such evidence, but determines whether the evidence, if credited by the jury, is legally sufficient to warrant the conclusion that the defendant is guilty beyond a reasonable doubt. . . .
“Hence, by definition, a demurrer is not a factual determination. . . . [T]he question before the trial judge in ruling on a demurrer remains purely one of law.
“We conclude, therefore, that a demurrer is not the functional equivalent of an acquittal, and that the Commonwealth has the right to appeal from an order sustaining defendant’s demurrer to its case-in-chief. In such a situation, the defendant himself elects to seek dismissal on grounds unrelated to his factual guilt or innocence.” Commonwealth v. Zoller, supra, at 357-358,490 A. 2d, at 401 .
Accordingly, the Pennsylvania Supreme Court remanded the case to the Superior Court for a determination on the merits of the appeal. We granted certiorari,
*144 II
The Pennsylvania Supreme Court erred in holding that, for purposes of considering a plea of double jeopardy, a defendant who demurs at the close of the prosecution’s case in chief “elects to seek dismissal on grounds unrelated to his factual guilt or innocence.”
Commonwealth
v.
Zoller, supra,
at 358,
*145
The Commonwealth argues that its appeal is nonetheless permissible under
Justices of Boston Municipal Court
v.
Lydon,
When a successful postacquittal appeal by the prosecution would lead to proceedings that violate the Double Jeopardy Clause, the appeal itself has no proper purpose. Allowing such an appeal would frustrate the interest of the accused in having an end to the proceedings against him. The Superior Court was correct, therefore, in holding that the Double Jeopardy Clause bars a postacquittal appeal by the prosecu
*146
tion not only when it might result in a second trial, but also if reversal would translate into “ ‘further proceedings of some sort, devoted to the resolution of factual issues going to the elements of the offense charged.’ ”
Martin Linen,
We hold, therefore, that the trial judge’s granting of petitioners’ demurrer was an acquittal under the Double Jeopardy Clause, and that the Commonwealth’s appeal was barred because reversal would have led to further trial proceedings.
The judgment of the Pennsylvania Supreme Court is
Reversed.
Notes
Various misdemeanor charges were also filed against petitioners, as well as charges relating to a previous fire in another building that they owned. These other charges are not relevant to this petition.
Pennsylvania Rule of Criminal Procedure 1124, 42 Pa. Cons. Stat. (1985 Pamphlet), provides in relevant part:
“Challenges to Sufficiency of Evidence
“(a) A defendant may challenge the sufficiency of the evidence to sustain a conviction of one or more of the offenses charged by a:
“(1) demurrer to the evidence presented by the Commonwealth at the close of the Commonwealth’s case-in-ehief;
“(b) A demurrer to the evidence shall not constitute an admission of any facts or inferences except for the purpose of deciding the demurrer. If the demurrer is not sustained, the defendant may present evidence and the ease shall proceed.”
Before the Pennsylvania Supreme Court, petitioners’ ease was consolidated with another ease presenting the same double jeopardy issue,
Commonwealth
v.
Zoller,
For purposes of our jurisdiction, the judgment of the Pennsylvania Supreme Court was final and subject to review at this time under 28 U. S. C. § 1257(3).
Harris
v.
Washington,
“[T]he guarantee against double jeopardy assures an individual that, among other things, he will not be forced, with certain exceptions, to endure the personal strain, public embarrassment, and expense of a criminal *144 trial more than once for the same offense. . . . Obviously, these aspects of the guarantee’s protections would be lost if the accused were forced to ‘run the gauntlet’ a second time before an appeal could be taken; even if the accused is acquitted, or, if convicted, has his conviction ultimately reversed on double jeopardy grounds, he has still been forced to endure a trial that the Double Jeopardy Clause was designed to prohibit.” Id., at 661-662 (footnote omitted).
We of course accept the Pennsylvania Supreme Court’s definition of what the trial judge must consider in ruling on a defendant’s demurrer. But just as “the trial judge’s characterization of his own action cannot control the classification of the action [under the Double Jeopardy Clause],”
United States
v.
Scott,
See also
Burks
v.
United States,
The status of the trial court’s judgment as an acquittal is not affected by the Commonwealth’s allegation that the court “erred in deciding what
*145
degree of recklessness was . . . required to be shown under Pennsylvania’s definition of [third-degree] murder.” Tr. of Oral Arg. 24. “[T]he fact that ‘the acquittal may result from erroneous evidentiary rulings or erroneous interpretations of governing legal principles’. . . affects the accuracy of that determination but it does not alter its essential character.”
United States
v.
Scott,
In
Rumsey,
a trial judge sitting as a sentencer in a death-penalty proceeding entered an “acquittal,”
i. e.,
a life sentence, based on an erroneous construction of the law governing a particular aggravating circumstance. The Court held that the Double Jeopardy Clause barred a second sentencing hearing. It distinguished
United States
v.
Wilson,
The fact that the “further proceedings” standard which the Superior Court quoted from
Martin Linen
was first articulated in
United States
v.
Jenkins,
