California Bar Homicide
Last updated: May 2, 2026
Homicide questions are one of the highest-leverage areas to study for the California Bar. This guide breaks down the rule, the elements you need to recognize, the named traps that catch most students, and a memory aid that scales to test day. Read it once, then practice the same sub-topic adaptively in the app.
The rule
Homicide is the unlawful killing of a human being by another human being. At common law (the MBE default), murder is the unlawful killing with malice aforethought, which can be shown four ways: (1) intent to kill, (2) intent to cause grievous bodily harm, (3) reckless indifference to an unjustifiably high risk to human life (depraved heart), or (4) intent to commit an inherently dangerous felony (felony murder). Voluntary manslaughter is an intentional killing committed in the heat of passion upon adequate provocation, before a reasonable cooling period; involuntary manslaughter is an unintentional killing through criminal negligence or during a non-BARRK misdemeanor or non-enumerated felony. California departs sharply: Penal Code §§187–189 codify first-degree murder (premeditated and deliberate, lying in wait, poison, torture, or felony murder during enumerated felonies under §189(a)) and second-degree murder; SB 1437 (2019) limits felony murder liability to actual killers, aiders with intent to kill, or major participants acting with reckless indifference to human life under §189(e), abrogating the natural-and-probable-consequences doctrine for murder.
Elements breakdown
Intent-to-Kill Murder
An unlawful killing committed with the specific purpose of causing the victim's death.
- Unlawful killing of a human being
- Defendant's specific intent to kill
- Causation (actual and proximate)
- Absence of justification or excuse
Intent-to-Cause-Grievous-Bodily-Harm Murder
An unlawful killing where the defendant intended serious bodily injury, even if death was not desired.
- Unlawful killing of a human being
- Intent to cause serious bodily injury
- Death resulted from the injury
- No legal justification or excuse
Depraved-Heart (Reckless-Indifference) Murder
An unintentional killing resulting from conduct showing extreme indifference to the value of human life.
- Unlawful killing of a human being
- Conduct creating very high risk of death
- Defendant's subjective awareness of the risk
- Conscious disregard of that risk
Common examples:
- Firing a gun into an occupied room
- Driving 100 mph through a school zone
- Playing Russian roulette with another person
Felony Murder (Common Law / MBE)
A killing, even accidental, that occurs during the commission or attempted commission of an inherently dangerous felony.
- Commission or attempt of an inherently dangerous felony
- Killing during the felony or immediate flight
- Causal connection between felony and death
- Death of someone other than a co-felon (majority agency rule)
Common examples:
- BARRK: Burglary, Arson, Robbery, Rape, Kidnapping
- Defendant's gun discharges accidentally during armed robbery
California First-Degree Murder (Pen. Code §189(a))
Murder committed by enumerated means or during enumerated felonies, requiring premeditation and deliberation when based on willful killing.
- Unlawful killing with malice aforethought
- Willful, deliberate, and premeditated; OR
- By poison, lying in wait, or torture; OR
- During arson, rape, robbery, burglary, mayhem, kidnapping, train wrecking, or specified sex offenses
California Second-Degree Murder
All murder with malice aforethought that does not qualify as first-degree under §189.
- Unlawful killing of a human being
- Malice aforethought (express or implied)
- Not premeditated and deliberate
- Not committed by enumerated means or felony
California Felony Murder Post-SB 1437 (Pen. Code §189(e))
Felony-murder liability is restricted to actors who personally killed, intended to kill, or were major participants acting with reckless indifference to human life.
- Death during enumerated §189(a) felony
- Defendant was actual killer; OR
- Aided/abetted with intent to kill; OR
- Major participant acting with reckless indifference to human life
Voluntary Manslaughter
An intentional killing mitigated from murder by adequate provocation and heat of passion.
- Intentional killing of a human being
- Adequate provocation that would inflame a reasonable person
- Defendant in fact acted in heat of passion
- No reasonable cooling-off period elapsed
- Causal link between provocation and killing
Common examples:
- Discovery of spouse in act of adultery
- Sudden mutual combat
- Serious battery on the defendant
Involuntary Manslaughter
An unintentional killing through criminal negligence or during an unlawful act not amounting to a felony covered by felony murder.
- Unintentional killing of a human being
- Criminal (gross) negligence; OR
- Misdemeanor-manslaughter (unlawful act malum in se)
- Causation between conduct and death
Imperfect Self-Defense (California)
An honest but unreasonable belief in the need for self-defense reduces murder to voluntary manslaughter.
- Defendant actually believed in imminent peril
- Defendant actually believed force was necessary
- Belief was objectively unreasonable
- Killing otherwise would have been murder
Common patterns and traps
The BARRK Bait Felony
The fact pattern features a felony that sounds dangerous (e.g., grand theft, simple assault, drug possession, embezzlement) but is NOT one of the inherently dangerous BARRK felonies. The wrong answer triggers felony murder anyway. Inherent dangerousness is judged in the abstract under the majority rule and California's 'inherently dangerous to human life' test for second-degree felony murder.
'Guilty of felony murder, because the death occurred during the commission of grand theft.' Looks plausible, but grand theft is not BARRK and not inherently dangerous in the abstract.
The Cooling-Off Hidden in the Timeline
The vignette buries a meaningful time gap between provocation and killing — the defendant goes home, drives across town, retrieves a weapon. A reasonable person would have cooled off, so voluntary manslaughter is unavailable and the charge stays at murder. Candidates fixate on the provocation and miss the timeline.
'Guilty of voluntary manslaughter, because Reyes acted in the heat of passion after discovering the affair' — wrong if Reyes drove home, loaded a gun, and returned 90 minutes later.
The California–MBE Switch
The question is set in California (or expressly invokes the Penal Code) but the seductive answer applies pure common-law felony-murder accomplice liability or the old natural-and-probable-consequences doctrine. Post-SB 1437, that doctrine no longer supports murder for non-killer accomplices unless they were major participants acting with reckless indifference.
'Guilty of first-degree murder, because his co-felon's killing was a natural and probable consequence of the robbery.' That reasoning is dead in California for murder.
Mere-Words Provocation
The provocation is verbal — a slur, a confession of past infidelity, a humiliating insult. The trap answer treats this as adequate provocation. Under the majority rule and California, words alone are not adequate provocation to reduce murder to voluntary manslaughter.
'Voluntary manslaughter, because the victim's racist taunt provoked the defendant to lose self-control.' Wrong — words alone are insufficient.
Co-Felon Killed by Police (Agency vs. Proximate Cause)
During a felony, a police officer or victim shoots and kills one of the co-felons. Under the majority agency rule (and California's redline rule from People v. Washington), the surviving felons are NOT liable for felony murder of their dead co-felon. A minority of jurisdictions follow proximate cause and would convict.
'Guilty of felony murder for the death of his accomplice, because the death was a foreseeable consequence of the armed robbery.' Wrong under California's agency/redline rule.
How it works
Start every homicide question by asking whether malice aforethought exists, because malice is the dividing line between murder and manslaughter. Suppose Reyes catches his business partner Liu rifling through company funds, grabs a heavy paperweight, and hurls it at Liu's head; Liu dies from the blow. If Reyes intended to kill or to cause grievous bodily harm, that is murder. If a reasonable person in Reyes's position would have been provoked into the heat of passion and Reyes had no time to cool off, the charge drops to voluntary manslaughter. If instead Reyes only meant to scare Liu but threw with reckless indifference to the obvious risk of death, depraved-heart murder is on the table. On the MBE, default to common-law categories; on a California essay, march through §§187, 188, and 189, distinguishing first-degree (premeditated, lying in wait, enumerated-felony murder) from second-degree, and remember that SB 1437 narrowed felony-murder accomplice liability to those who killed, intended to kill, or were major participants acting with reckless indifference.
Worked examples
Should the court grant Patel's motion to dismiss the felony-murder charge?
- A No, because robbery is an enumerated felony under §189(a) and the death was a foreseeable consequence of the armed robbery.
- B No, because Patel was a major participant acting with reckless indifference to human life under §189(e).
- C Yes, because California follows the agency (redline) rule, and a co-felon killed by a non-felon is not a felony-murder victim. ✓ Correct
- D Yes, because SB 1437 abolished felony murder entirely in California.
Why C is correct: California follows the agency rule articulated in People v. Washington — felony-murder liability does not extend to deaths caused by a non-felon (the victim or police) acting in resistance to the felony, especially when the decedent is a co-felon. Liu was killed by the store owner, not by Patel or any other felon, so no felony-murder predicate killing occurred. The motion to dismiss should be granted regardless of whether Patel was a major participant.
Why each wrong choice fails:
- A: This applies a proximate-cause theory of felony murder, which California rejects. Foreseeability is irrelevant when the killer is a non-felon resisting the crime; the agency/redline rule controls. (Co-Felon Killed by Police (Agency vs. Proximate Cause))
- B: Major-participant/reckless-indifference analysis under §189(e) only matters once a qualifying felony-murder killing exists. Because the agency rule defeats the predicate killing, §189(e) is never reached. (The California–MBE Switch)
- D: SB 1437 narrowed felony-murder accomplice liability but did NOT abolish felony murder. Actual killers, intent-to-kill aiders, and major participants acting with reckless indifference remain liable. (The California–MBE Switch)
Will Reyes's heat-of-passion defense most likely succeed in reducing the charge to voluntary manslaughter?
- A Yes, because discovery of a spouse's adultery is one of the classic categories of adequate provocation.
- B Yes, because Reyes's emotional state at the moment of the killing was undisputedly inflamed.
- C No, because adultery does not constitute legally adequate provocation under modern doctrine.
- D No, because a reasonable person would have cooled off during the roughly 95-minute interval, and Reyes in fact had time to plan. ✓ Correct
Why D is correct: Voluntary manslaughter requires that the killing occur in the heat of passion before a reasonable person would have cooled off. Adultery-in-the-act is classic adequate provocation, but Reyes drove 45 minutes one way, retrieved a weapon, and drove back — roughly 95 minutes during which a reasonable person would regain self-control. The cooling-off element is not satisfied, and the deliberate retrieval of the rifle further supports premeditation.
Why each wrong choice fails:
- A: The categorical adequacy of adultery-discovery provocation is correct, but provocation is only one element. The defense fails on the separate cooling-off requirement. (The Cooling-Off Hidden in the Timeline)
- B: Subjective heat of passion alone does not satisfy the doctrine. The test is objective — whether a reasonable person would still be inflamed and unable to cool off. (The Cooling-Off Hidden in the Timeline)
- C: This overstates modern doctrine. Adultery discovered in the act remains recognized as adequate provocation in most jurisdictions and in California; the defense fails on cooling-off, not on adequacy.
Is Wong likely to be convicted of second-degree murder?
- A Yes, because rigging an indiscriminate deadly trap demonstrates implied malice through conscious disregard of an extreme risk to human life. ✓ Correct
- B Yes, because the killing occurred during the commission of the felony of unlawfully discharging a firearm, triggering felony murder.
- C No, because Wong lacked the specific intent to kill, which is required for second-degree murder.
- D No, because Wong's conduct amounts at most to involuntary manslaughter, since he was merely criminally negligent.
Why A is correct: California second-degree murder reaches killings committed with implied malice — conduct creating a high probability of death committed with conscious disregard for human life. A spring-gun trap aimed at chest height, indiscriminate as to who triggers it, satisfies the depraved-heart/implied-malice standard. Wong's subjective awareness that the device would fire on whoever opened the door is sufficient; specific intent to kill is not required.
Why each wrong choice fails:
- B: The merger doctrine bars using an assaultive felony as the predicate for second-degree felony murder when it is integral to the homicide. Discharging a firearm into a person merges into the killing itself; California's Ireland merger rule precludes this theory. (The BARRK Bait Felony)
- C: Specific intent to kill is required for express-malice murder, but second-degree murder is also satisfied by implied malice (depraved heart). Wong's reckless indifference supplies malice without any intent to kill.
- D: Involuntary manslaughter requires only criminal negligence. Setting an indiscriminate deadly trap goes beyond negligence to conscious disregard of an extreme risk, satisfying implied malice and elevating the offense to second-degree murder. (Mere-Words Provocation)
Memory aid
BARRK for inherently dangerous felonies (Burglary, Arson, Robbery, Rape, Kidnapping). For California first-degree, use 'PLT-F': Premeditated, Lying in wait, Torture/poison, Felony enumerated. For voluntary manslaughter provocation, the four classics: APEX — Adultery, serious battery, mutual combat (Provoked fight), Exposure to a relative's serious crime, eXtreme verbal provocation does NOT qualify.
Key distinction
The single dispositive question is whether malice aforethought is present. Malice + premeditation OR enumerated felony = first-degree murder (California §189). Malice without premeditation = second-degree murder. Intentional killing minus malice (because of adequate provocation) = voluntary manslaughter. No intent to kill but criminal negligence or non-enumerated misdemeanor = involuntary manslaughter. Mere words, learning of past infidelity, or trivial insults are NOT adequate provocation under the majority rule.
Summary
Diagnose homicide by checking for malice (any of the four routes), then check whether premeditation, an enumerated felony, or provocation moves the killing up to first-degree murder or down to manslaughter — and on California questions, apply §§187–189 and SB 1437's narrowed felony-murder rule.
Practice homicide adaptively
Reading the rule is the start. Working California Bar-format questions on this sub-topic with adaptive selection, watching your mastery score climb in real time, and seeing the items you missed return on a spaced-repetition schedule — that's where score lift actually happens. Free for seven days. No credit card required.
Start your free 7-day trialFrequently asked questions
What is homicide on the California Bar?
Homicide is the unlawful killing of a human being by another human being. At common law (the MBE default), murder is the unlawful killing with malice aforethought, which can be shown four ways: (1) intent to kill, (2) intent to cause grievous bodily harm, (3) reckless indifference to an unjustifiably high risk to human life (depraved heart), or (4) intent to commit an inherently dangerous felony (felony murder). Voluntary manslaughter is an intentional killing committed in the heat of passion upon adequate provocation, before a reasonable cooling period; involuntary manslaughter is an unintentional killing through criminal negligence or during a non-BARRK misdemeanor or non-enumerated felony. California departs sharply: Penal Code §§187–189 codify first-degree murder (premeditated and deliberate, lying in wait, poison, torture, or felony murder during enumerated felonies under §189(a)) and second-degree murder; SB 1437 (2019) limits felony murder liability to actual killers, aiders with intent to kill, or major participants acting with reckless indifference to human life under §189(e), abrogating the natural-and-probable-consequences doctrine for murder.
How do I practice homicide questions?
The fastest way to improve on homicide is targeted, adaptive practice — working questions that focus on your specific weak spots within this sub-topic, getting immediate feedback, and revisiting items you missed on a spaced-repetition schedule. Neureto's adaptive engine does this automatically across the California Bar; start a free 7-day trial to see your sub-topic mastery climb in real time.
What's the most important distinction to remember for homicide?
The single dispositive question is whether malice aforethought is present. Malice + premeditation OR enumerated felony = first-degree murder (California §189). Malice without premeditation = second-degree murder. Intentional killing minus malice (because of adequate provocation) = voluntary manslaughter. No intent to kill but criminal negligence or non-enumerated misdemeanor = involuntary manslaughter. Mere words, learning of past infidelity, or trivial insults are NOT adequate provocation under the majority rule.
Is there a memory aid for homicide questions?
BARRK for inherently dangerous felonies (Burglary, Arson, Robbery, Rape, Kidnapping). For California first-degree, use 'PLT-F': Premeditated, Lying in wait, Torture/poison, Felony enumerated. For voluntary manslaughter provocation, the four classics: APEX — Adultery, serious battery, mutual combat (Provoked fight), Exposure to a relative's serious crime, eXtreme verbal provocation does NOT qualify.
What's a common trap on homicide questions?
Treating any felony as triggering felony murder (must be inherently dangerous and BARRK-style on MBE; enumerated under §189(a) in California)
What's a common trap on homicide questions?
Confusing voluntary manslaughter (intentional, provoked) with involuntary manslaughter (unintentional, negligent)
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