Felony Murder and Homicide Grading Explained (1L Criminal Law)

Homicide is the killing of one human being by another. It is not itself a crime — it becomes one, and becomes a particular one, based on the defendant's mental state and the circumstances surrounding the killing.

At common law, murder is an unlawful killing committed with malice aforethought. Manslaughter is an unlawful killing without malice. Everything in a first-year homicide unit is essentially an elaboration of where that line falls.

"Malice aforethought" is a term of art that has almost nothing to do with malice in the ordinary sense and does not require any advance planning. It is satisfied by any of four mental states, and felony murder is the fourth.

One caution before the details: homicide is heavily statutory in modern American jurisdictions, and the definitions vary. Your exam answer should follow the rule your course teaches. What follows is the common-law framework most courses build from, with notes on where the Model Penal Code departs from it.

Intent to kill. The defendant acted with the purpose of causing death, or with knowledge that death was substantially certain to result. This is the paradigm case and the one students find intuitive.

Intent to inflict grievous bodily harm. The defendant intended serious bodily injury short of death, and death resulted. The law treats this as murder because deliberately inflicting serious injury creates an obvious risk of death, and the defendant accepted that risk.

Depraved heart. The defendant acted with extreme recklessness — a conscious disregard of an unjustifiably high risk to human life, under circumstances showing indifference to whether anyone died. Firing a rifle into an occupied building is the classic illustration. The defendant did not intend to kill anyone, but the conduct is so dangerous and so unjustified that the law treats the resulting death as murder.

Felony murder. A death caused during the commission of certain felonies is murder, without any separate proof that the defendant intended or foresaw the death. The intent to commit the felony supplies the malice.

The division of murder into degrees is statutory rather than common law, and it varies. In most jurisdictions that use it, first-degree murder covers killings that are both premeditated and deliberate, plus killings committed during specified enumerated felonies. Second-degree murder is the residual category — every killing that qualifies as murder but does not meet the first-degree criteria.

The enumerated felonies are commonly burglary, arson, rape, robbery, and kidnapping. Many students remember them with the mnemonic BARRK. Statutes differ on the list, and some add offenses like carjacking or sexual assault of a minor.

Premeditation and deliberation are separate requirements that get collapsed too often. Premeditation means the defendant thought about the killing beforehand; deliberation means the decision was made in a cool state of mind rather than in the grip of passion. Jurisdictions split sharply on how much time premeditation takes — some say an instant suffices, others require a meaningful interval for reflection.

Depraved-heart murder and felony murder based on non-enumerated felonies generally fall into second degree.

Voluntary manslaughter is an intentional killing that would be murder except that the law recognises a mitigating circumstance. The most common is adequate provocation, sometimes called heat of passion.

The traditional test has four parts, and exam answers should walk through all four. There must be provocation adequate to cause a reasonable person to lose self-control. The defendant must actually have been provoked. A reasonable person would not have cooled off in the time between the provocation and the killing. And the defendant must not actually have cooled off.

The first and third elements are objective; the second and fourth are subjective. A fact pattern that gives you a defendant who was genuinely enraged by something a reasonable person would shrug off fails the first element, and a defendant who waited three weeks fails the third.

Words alone are traditionally held insufficient provocation, though this is one of the more contested rules and some jurisdictions have relaxed it. Classic adequate provocation includes serious battery, mutual combat, and discovery of a spouse in adultery — categories that reflect their historical origins and that many modern courts and commentators have criticised.

Imperfect self-defense is the other main route to voluntary manslaughter. A defendant who honestly but unreasonably believed deadly force was necessary has not established a complete defense, but in many jurisdictions the killing is reduced from murder to manslaughter.

Involuntary manslaughter covers unintentional killings that are nevertheless criminal. The dominant theory is criminal negligence: the defendant's conduct fell so far below the standard of care that the law imposes criminal liability, and death resulted.

The hard question in every course is the line between criminal negligence and depraved-heart murder, since both involve unintentional killings caused by dangerous conduct. The usual distinction is awareness and degree. Depraved heart requires a conscious disregard of a very high risk to human life, showing indifference to its value. Criminal negligence covers a gross deviation from reasonable care that need not be consciously appreciated.

Because that distinction is contested and fact-bound, exam questions in this area are often testing whether you can argue it in both directions rather than whether you can announce the correct label.

Misdemeanor manslaughter, sometimes called the unlawful-act doctrine, is the manslaughter analogue of felony murder: a death caused during the commission of a misdemeanor or a non-dangerous felony. Many jurisdictions have narrowed or abolished it, and where it survives it typically requires that the underlying offense be malum in se or that the death be a foreseeable consequence.

The felony murder rule is the doctrine most likely to appear on an exam and the one with the most limiting principles. Stated broadly, a death caused during the commission or attempted commission of a felony is murder, and no separate proof of intent to kill is required.

Courts have built four main limitations, and a strong answer works through each.

Inherently dangerous felony. Many jurisdictions restrict felony murder to felonies that are inherently dangerous to human life. Courts split on whether dangerousness is assessed in the abstract, looking only at the statutory elements, or as committed on the particular facts. That split alone often decides a fact pattern.

The merger doctrine, sometimes called the independent felony requirement. The underlying felony must be independent of the killing. An assault that causes death cannot serve as the predicate, because every fatal assault would then become murder and the distinctions among homicide offenses would collapse. Burglary and robbery are independent; aggravated assault typically is not.

Causation and the res gestae requirement. The death must occur during the commission of the felony or the immediate flight from it, and there must be a causal connection. Once the felon has reached a point of temporary safety, the felony is generally treated as complete for these purposes.

Who did the killing. Jurisdictions divide between the agency theory and the proximate cause theory. Under the agency theory, which is the majority position, the killing must be committed by the defendant or a co-felon; a death caused by a police officer or a resisting victim does not trigger the rule. Under the proximate cause theory, a felon may be liable for any death that is a foreseeable result of the felony, whoever fired the fatal shot.

The Model Penal Code restructures homicide around its four culpability levels and does not adopt an independent felony murder rule.

Under the Code, criminal homicide is murder when committed purposely or knowingly, or recklessly under circumstances manifesting extreme indifference to the value of human life. Manslaughter covers reckless killings that do not meet that standard, and killings committed under extreme mental or emotional disturbance for which there is reasonable explanation or excuse. Negligent homicide is a separate, lesser offense.

The Code handles the felony-murder situation through a presumption rather than a rule: recklessness and extreme indifference are presumed if the defendant is engaged in, or fleeing from, robbery, rape or deviate sexual intercourse by force or threat, arson, burglary, kidnapping, or felonious escape. The presumption is rebuttable, which is the substantive difference from the common-law rule.

The Code also replaces the rigid provocation categories with the broader "extreme mental or emotional disturbance" standard, assessed from the viewpoint of a person in the defendant's situation under the circumstances as the defendant believed them to be. That is considerably more flexible than the traditional four-element test, and courses often ask you to compare the two.

Jumping to felony murder without checking the limitations. Identifying that a death occurred during a robbery is the beginning of the analysis, not the end. Work through dangerousness, merger, res gestae, and the agency question.

Treating premeditation and deliberation as one element. They are two, and a defendant can premeditate without deliberating — planning a killing while in a state of rage is a recurring fact pattern precisely because it separates them.

Skipping the subjective prongs of provocation. Many students recite that a reasonable person would have been provoked and stop there. The defendant must also actually have been provoked and actually not have cooled off.

Calling every unintentional killing involuntary manslaughter. Depraved-heart murder is also unintentional. The question is the degree of risk and the defendant's awareness of it, and that argument is usually where the points are.

Ignoring that the underlying felony still has to be proved. Felony murder liability depends on liability for the predicate felony, so a defense that defeats the felony defeats the murder charge built on it.

Verbloom's law-school module includes 1L criminal law fact patterns with element-by-element breakdowns, which suits homicide because the offenses are distinguished by mental state rather than by outcome and the distinctions are easy to blur under time.

Working through the same facts under both the common-law and Model Penal Code frameworks is a useful exercise, since many courses test the comparison directly.