Also known as:hot-blood · in hot blood · heat of passion
Written by attorneys · grounded in primary & secondary sources — see below
The state of intense emotional agitation arising from adequate provocation that negates malice aforethought and reduces an intentional killing from murder to voluntary manslaughter.
Sources & Authorities
How it applies
Common Examples
6
Battery on Relative Revives Passion
Holly Hayes learned at a company party that her coworker had removed her name from a patent filing. When the coworker punched Holly's brother in the face during the argument, Holly seized a nearby laptop stand and struck the coworker fatally in the head moments later. The immediate sequence of battery on a close relative and the killing satisfied the requirements for mitigation because Holly remained under the influence of sudden passion with no cooling interval. The charge therefore reduced from murder to voluntary manslaughter.
Adultery Discovery Prompts Immediate Strike
Harriet Hamilton entered a testing room and found her spouse engaged in sexual relations with a colleague. Enraged, Harriet seized a torque wrench and delivered fatal blows to the colleague before any time for reflection could pass. The discovery of spousal adultery supplied classic adequate provocation that kept the killing in hot blood. The offense therefore qualified as voluntary manslaughter rather than murder.
Select any source to read its text and confirm it supports the definition.
Cases
Common Law
Dictionaries
Premeditation Absent in Sudden Confrontation
Hyun Han confronted a coworker who had publicly humiliated him and then slapped him during an inventory dispute. Hyun immediately drew a concealed box cutter and stabbed the coworker fatally before any cooling could occur. The facts showed the killing occurred in hot blood triggered by the battery rather than through prior calculation. The jury could therefore find voluntary manslaughter instead of first-degree murder.
Austin v. United States509 U.S. 602 (1993)
Cooling Period Bars Reduction
Hamid Hassan retreated to a farmhouse after a neighbor beat him during an irrigation dispute. After discussing the matter with others and allowing time to pass, Hamid later confronted the neighbor and shot him. The interval permitted an ordinary person to regain composure, so the later shooting did not occur in hot blood. The jury could convict only of murder.
Harris v. United States375 A.2d 505, 508 (D.C. 1977)
Instruction on Degree Distinction
Heidi Henderson struck her supervisor with a metal rod after the supervisor grabbed and slapped her during a termination meeting. The trial court instructed the jury that a killing committed in hot blood upon adequate provocation constitutes voluntary manslaughter rather than murder. The evidence of sudden battery supported the instruction because the facts showed impulse rather than calm deliberation. The jury therefore received proper guidance on the distinction.
Allen v. United States164 U.S. 492, 501-02, 17 S.Ct. 154, 157, 41 L.Ed. 528 (1896)
Voluntariness of Confession in Heat
Hana Hashimoto confessed after police confronted her with evidence of a killing that occurred moments after she discovered her spouse in an adulterous act. The confession followed immediately upon the provocation that placed her in hot blood. The court examined whether the statement was voluntary given the emotional state created by the sudden discovery. The timing supported a finding that the confession arose from the ongoing passion rather than from coercive interrogation alone.
Jackson v. Denno378 U.S. 368 (1964)
Common questions
Frequently Asked
4
What constitutes adequate provocation for hot blood mitigation?+
Adequate provocation requires that the provocation be of a type sufficient to arouse sudden and intense passion in an ordinary person, that the defendant actually became provoked, that a reasonable person would not have had time to cool off, and that the defendant in fact did not cool off. Recognized categories include a serious battery on the defendant or a close relative and catching a spouse in the act of adultery.
Supporting sources
Does a cooling-off period prevent reduction to voluntary manslaughter?+
Yes. If sufficient time has elapsed for a reasonable person to cool off between the provocation and the killing, the defendant cannot claim mitigation even if the original provocation was adequate. The facts must show both that an objectively reasonable person would not have cooled and that the defendant in fact did not cool.
Supporting sources
Can mere words alone supply adequate provocation?+
No. Mere words, trivial battery, and wrongs that occurred long in the past are legally inadequate. Only serious battery or discovery of spousal adultery, among other recognized categories, qualify to place the defendant in hot blood.
Supporting sources
Does an honest but unreasonable belief in self-defense reduce murder to voluntary manslaughter?+
In some jurisdictions an honest but unreasonable belief that deadly force is necessary in self-defense can mitigate an intentional killing to voluntary manslaughter even without traditional provocation. The belief must arise directly from the confrontation and must be genuine though mistaken.
Supporting sources
541 U.S. 36 (2004)Evidence
…might invoke today: that Cobham's statements were self-inculpatory, 2 How. St. Tr., at 19, that they were not made in the heat of passion, id. , at 14, and that they were not "extracted from [him] upon any hopes or promise of Pardon," id. , at 29. It is not plausible that the Framers' only objection to the trial was that…