Concept
Improper Termination
Model Penal Code former jeopardy
Improper Termination
The routes covered so far all depend on a first prosecution that reached a result: an acquittal, a conviction, or a final order for the defendant. A prosecution can also stop without any of those results, because the court ends it partway through the trial. Sections 1.08(4) and 1.09(3) treat certain of those stoppages as an improper termination, and they give the defendant the protection against a second prosecution that a verdict would have given. A termination is improper when it happens for reasons not amounting to an acquittal, after the first witness is sworn but before verdict, and when it falls within none of the exceptions the Code lists.1 The trigger in the Code's text is the swearing of the first witness, the moment evidence starts to come in, and the text nowhere mentions the swearing of the jury. Students misdate the trigger when they count from the swearing of the jury, and a stoppage that comes before any witness is sworn does not meet the definition by its terms.2
The route does its work in two sections, and the difference between them is the difference between a repeat prosecution and a new charge. Section 1.08(4) governs the repeat: when the later prosecution is for a violation of the same provision and rests on the same facts, an improper termination of the first prosecution bars it.3 Section 1.09(3) governs the new charge: when the later prosecution is for a different offense, an improper termination bars it only if the defendant could have been convicted of that offense had the first prosecution not been improperly terminated.4 Hawaii's counterpart to § 1.09(3) follows the same structure, defining the term by cross-reference to its own section 701-110(4) and barring a later prosecution for an offense of which the defendant could have been convicted had the former prosecution not been improperly terminated.5 The narrower reach of § 1.09(3) follows from what the bar stands in for. The routes that reach same-conduct and should-have-been-joined offenses all begin with an acquittal or a conviction, and a prosecution that was only improperly terminated is neither.6 The bar here replaces the verdict the first trial would have produced, and that verdict could have covered only offenses properly before the factfinder, so the bar extends no further.
The reasons for the rule appear once you ask who controls a trial that is going badly. A prosecutor whose key witness has just faltered has a standing temptation to end the proceeding and try again later with a better-prepared case, and the court is the actor who can grant that wish. If the State could do this freely, the first trial would become a rehearsal in which the State learns the defense, repairs its weak points, and starts over, and the protection against a second prosecution would mean little. The line at the first witness reflects this logic. Once evidence is coming in, the defendant has a stake in getting a verdict from the tribunal that has begun to hear the case, whereas before that point the State has shown the factfinder nothing and a halt costs the defendant little. The exceptions then separate stoppages the State might engineer from stoppages it did not choose. A defendant who asks for the trial to end has made that choice personally, and a court that finds it cannot lawfully or fairly go on has not ended the trial for the State's strategic benefit.
The three sections that follow take the route in the order a court would work through it. The first sets out the definition and its consequences in full, the second takes up the defendant's consent or waiver, and the third takes up the trial court's finding of necessity on the listed grounds. The Code writes both exceptions into the definition itself, so a termination that falls within either one is not improper at all, and the question whether it bars retrial never arises.9
When Termination Is Improper
The definition in § 1.08(4) has three working parts, and a stoppage is an improper termination only when all three are present and no listed exception removes it. The prosecution must have ended for reasons not amounting to an acquittal, the ending must have come after the first witness was sworn, and it must have come before verdict.11 The text does not ask who sought the stoppage, so a prosecutor's motion, the court's own decision, and a defense request all fit the opening words equally well. That breadth is why the consent exception and the judicial-necessity exception, taken up in the next two sections, do the sorting the opening definition leaves undone. Each of the three parts has its own reason, and seeing them separately lets a reader place an unfamiliar stoppage correctly.
The first part, that the termination be for reasons not amounting to an acquittal, keeps this route for stoppages that decide nothing about guilt. Section 1.08(1) defines an acquittal as a finding of not guilty by the trier of fact or a determination that the evidence was insufficient to warrant a conviction.12 A judge who halts a trial midway because the State's proof cannot support a conviction has therefore produced an acquittal, and the bar arises under the acquittal provisions. The classification matters because an acquittal carries the broader protection. After an acquittal, § 1.09(1) reaches offenses available at the first trial, offenses that should have been joined, and offenses based on the same conduct, while an improper termination reaches only the same offense on the same facts and the offenses the defendant could have been convicted of.13 A stoppage that decides nothing leaves no finding to build on, so the shield it provides is as wide as the verdict the first trial would have returned and no wider.
The second and third parts fix a window that opens when the first witness is sworn and closes at verdict. The opening edge sits at the first witness because that is when the State's evidence begins to reach the factfinder and the defendant becomes exposed to a verdict. Before then the State has shown the tribunal nothing, so a stoppage costs the defendant little and gives the State little to exploit. The marker also has a practical merit, since the record fixes the moment a witness took the oath, whereas a test asking how much the factfinder had heard would invite a dispute over every trial that stopped early. The closing edge sits at verdict because a verdict gives the prosecution a result with its own bar: an acquittal falls under § 1.08(1) and a conviction under § 1.08(3).14 A stoppage before the window opens, or a result after it closes, never reaches this definition.
Once a termination is improper, the next question is what the State now wants to charge, because the Code sets two different reaches. When the later prosecution is for a violation of the same provision and rests on the same facts, § 1.08(4) bars it without further inquiry.16 When the later prosecution is for a different offense, § 1.09(3) bars it only if the defendant could have been convicted of that offense had the former prosecution not been improperly terminated, which in practice means an offense on which the first factfinder could have returned a verdict, such as a lesser offense carried within the original charge.17 The bar stands in for the verdict the first trial never delivered. A verdict would have covered only what the factfinder was entitled to decide, so the substitute covers no more.
Students lose this issue when they carry over the same-conduct rule from the acquittal route. Section 1.09(1)(c) bars a prosecution for the same conduct only after a former prosecution that resulted in an acquittal or a conviction, and an improperly terminated prosecution is neither.19 A different offense that rests on the same conduct but lies outside what the first trial could have produced is therefore not barred by this route, however closely it tracks the first charge. In the burglary scene, the trespass charge falls inside the bar because the first verdict could have covered it, and the second-house burglary falls outside because the first factfinder was never asked about that house.
Consent and Waiver
The first exception takes out of the improper-termination definition every stoppage that the defendant chose or accepted. Section 1.08(4)(a) provides that a termination is not improper when the defendant consents to it or waives, "by motion to dismiss or otherwise," the right to object to it.23 Because the Code writes the exception into the definition itself, a stoppage inside it is not an improper termination at all, so neither § 1.08(4) nor § 1.09(3) bars a later prosecution on that ground.24 Such a stoppage also decided nothing about guilt, so it is not an acquittal, and the State may bring the case again. The exception turns on a single question: whose choice was it to end the trial?
The reason follows from what the bar protects. After an improper termination, the bar safeguards the defendant's interest in having the tribunal that has begun to hear the case decide it. That interest belongs to the defendant, which means the defendant is the person who can set it aside. A defendant who asks for the trial to end, or who accepts its ending without objection, has weighed continuing before this factfinder against starting over and has picked the second course, so the court has taken nothing from that defendant. The incentive reasoning points the same way. If a defense request for a mistrial could also create a bar, a defendant could sit through the State's evidence, move to end the trial the moment the proof turned strong, and then claim immunity from a second trial, using the first as a free look at the State's case while keeping the verdict in reserve. The exception removes that option at the source, because the defendant must choose between a verdict from this tribunal and a fresh trial and cannot hold both. It also leaves the State's own position unchanged: a stoppage the prosecutor obtained over the defendant's objection stays improper, so the exception gives the State no way to end a failing trial.
The text names two ways of giving up the objection, and they differ in how the defendant's position shows itself. Consent is agreement to the termination, as when the court or the prosecutor proposes to end the trial and the defendant agrees, or when the defendant asks for the stoppage. Waiver is the surrender of the right to object, and the Code's words "by motion to dismiss or otherwise" show that a defense motion is one way to give up that right and that other conduct can also do it.25 For either route the working test is the defendant's actual position on the stoppage. A defense request for a mistrial is the plainest consent, and an objection the defendant makes and presses is the plainest absence of it. The exception asks only whether the defendant consented or waived and does not condition the answer on what caused the trouble that led to the stoppage, so a defendant who moves for a mistrial after a prejudicial event is treated as having consented.26
The two scenes differ in two facts, who wanted the stoppage and whether a listed ground supports it, and those are the two sorting questions the Code asks. The exception in this section asks about the defendant's position. The next section takes up the exception that asks about the trial court's finding, which can make a stoppage proper even when the defendant objects.
Students misapply this exception when they treat every defense motion as consent. A defense motion to dismiss on the ground that the State's evidence is insufficient is different in kind. If the court grants it, the ruling is a determination that the evidence was insufficient to warrant a conviction, which § 1.08(1) defines as an acquittal.29 The consent exception sits inside the improper-termination definition, and that definition covers only terminations for reasons not amounting to an acquittal, so the exception never reaches an acquittal.30 The acquittal provisions then control, and they bar a later prosecution for the same offense on the same facts and, under § 1.09(1), for the further offenses that section lists.31 What the court decided therefore determines which provision governs. A stoppage that decides nothing about guilt falls to the improper-termination analysis, where consent and waiver apply, and a ruling that the evidence was insufficient falls to the acquittal provisions.
Judicial Necessity Findings
The second exception reaches the same result as the first by a different route. Consent and waiver ask about the defendant's own position and apply only when the defendant went along with the stoppage. Section 1.08(4)(b) asks about a determination the trial court makes, and it applies whether or not the defendant objects: a termination is not improper when the trial court finds it necessary because of one of five listed circumstances.33 Like the consent exception, this one sits inside the improper-termination definition, so a stoppage that satisfies it is not an improper termination at all, and neither § 1.08(4) nor § 1.09(3) bars a later prosecution on that ground. The two exceptions are alternatives, because the Code makes a termination proper under any one of the listed circumstances.34
The reason for the exception starts with what the improper-termination bar protects. A defendant whose trial has begun has an interest in seeing that tribunal finish the case, and an unconsented stoppage after the first witness is sworn takes that opportunity away. That interest yields when honoring it would be futile, legally defective, or unjust to either side, and the five grounds in § 1.08(4)(b) are best read as examples of those situations rather than as a list to memorize.35 Two grounds describe a trial that cannot reach a usable result. When the jury is unable to agree, the tribunal cannot deliver the verdict the defendant's interest was meant to secure. When it is physically impossible to proceed with the trial in conformity with law, as when the presiding judge becomes incapacitated and no substitute is available, there is no lawful way to continue.
The remaining grounds address a trial that could go on but could not end durably or fairly. A legal defect in the proceedings that would make any judgment entered upon a verdict reversible as a matter of law is the durability case, because finishing the trial would spend both sides' effort on a verdict that could not stand. Prejudicial conduct, in or outside the courtroom, and false statements by a juror on voir dire, the questioning of prospective jurors before they are seated, are the fairness cases. A juror who concealed a tie to the victim's family, for example, makes any verdict from that jury untrustworthy. The prejudicial-conduct ground speaks of injustice to either the defendant or the State, and the symmetry has a purpose. If only injustice to the defendant counted, a jury tampered with outside the courtroom on the defendant's behalf would leave the State with a trial it could not fairly finish and no lawful way to stop it.
What keeps the exception from swallowing the rule is the requirement that the trial court make the finding. The text conditions the exception on what the trial court finds, and the finding must rest on one of the listed grounds.36 The requirement matters because the State is usually the party asking to stop. A prosecutor who sees a case going badly gains from ending the trial after watching the defense cross-examine and the witnesses perform, and then starting over with the weaknesses repaired. If the prosecutor's own request or characterization could supply necessity, the exception would shrink to a label the State attaches to a strategic withdrawal. Placing the determination with the trial court means the State must point to a listed circumstance that actually exists and cannot rest on a preference, which is why the crowded-calendar stoppage in the preceding section stays improper.
The scenes differ in the reason the trial ended and in whether the court found a listed ground. The objection in the second scene serves only to close off the consent exception, and it could not have changed the first scene's result, because this exception does not ask about the defendant's position. A court that finds the jury hopelessly deadlocked may end the trial over the loudest objection, and a court that finds nothing may not end it merely because the prosecutor asks.
Students lose this issue when they treat the existence of a troubling circumstance as enough without the court's finding. The exception speaks of what the trial court finds, so a stoppage the prosecutor requests and the court grants without a finding does not fit it, even if a ground might have been found.39 The grounds are also a closed set. A crowded docket, a witness who failed to appear without a legal impediment, or evidence that is thinner than the State hoped are not among them, however sincerely the prosecutor presents them. The sorting therefore takes two questions after the stoppage is placed inside the window: whether the defendant consented or waived, and, if not, whether the trial court found a listed ground. A termination that passes neither test is improper.