Murder is the unlawful killing of a human being, or a fetus, with malice
aforethought.  If the prosecution cannot prove that the defendant acted with
malice aforethought then they cannot prove murder, however, they still may be
able to prove some type of manslaughter.




For the Defendant to be convicted of either 1st or 2nd degree murder, the
prosecution must prove beyond reasonable doubt that the Defendant acted with
malice aforethought.  Malice aforethought may be express or implied.  

Express malice is the deliberate intention to kill another person. Penal Code §188.  
A Defendant has a specific intent to kill if he possesses the intent to kill an
individual or any member of a specific group.  In re Sergio R. (1991) 228 Cal.App.
3d 588.  

Implied malice exists when the killing was unprovoked or when the circumstances
of the killing show an abandoned and maligned heart. Penal Code §188.  According
to case law, the best definition of implied malice is the state of mind that exists
when a person deliberately performs an act, the natural consequences of which
are dangerous to life, with knowledge that his or her conduct endangers the life of
another and with conscious disregard for life. People v. Dellinger (1989) 49 Cal.3d
1212.

This definition has been understood as containing a physical component and a
mental component: the physical component is the performance of an act, the
natural consequences of which are dangerous to life; the mental component is the
requirement that the defendant know his or her conduct endangers life and acts
with conscious disregard for life. People v. Patterson (1989) 49 Cal.3d 615, 626-
627.




If the prosecutor is able to prove the killing was done with malice aforethought
then the killing is considered a murder.  An intentional killing with malice that is
premeditated and deliberate is 1st degree murder.  All other murders are 2nd
degree murder.

Deliberation refers to careful weighing of considerations in forming a course of
action, and premeditation means thought over in advance. People v. Koontz (2002)
27 Cal.4th 1041, 1080.  Basically, premeditation means considered beforehand
and deliberate means formed or arrived at or determined upon as a result of
careful thought and weighing of considerations for and against the proposed
course of action.  

The process of premeditation and deliberation does not require an extended
period of time.  The test is not the duration of time, but the extent of the reflection.
People v. Mayfield (1997) 14 Cal.4th 668.  Again, any murder which there is no
premeditation or deliberation is a 2nd degree murder.

The California Supreme Court has established the “Anderson Test” to be applied
on appellate review for evaluating whether there was sufficient circumstantial
evidence of premeditation and deliberation.  Three types of evidence substantiate
the existence premeditation and deliberation: (1) evidence of prior planning
activity; (2) evidence of a motive to kill; and (3) evidence of a particular and exact
means and manner of killing indicating that the killer must have had a
preconceived design.  People v. Anderson (1968) 70 Cal.2d 15.



Voluntary manslaughter is distinguished from murder by the absence of malice.  
The statutory definition of voluntary manslaughter is the unlawful killing of a
human being without malice aforethought upon a sudden quarrel or heat of
passion.  Penal Code §192(a).  The sudden quarrel or heat of passion refers to
provocation. People v. Van Ronk (1985) 171 Cal.App.3d 818.

There are two basic types of voluntary manslaughter: the statutory definition with
provocation for the killing or the “flannel theory” of imperfect self-defense.  Each of
these theories basically negate the malice required for a murder conviction.

These two theories are the only time that an intentional killing can be reduced to
manslaughter.

HEAT OF PASSION/SUDDEN QUARREL:
The theory behind the statutory “heat of passion” doctrine is that the Defendant is
less morally culpable, because the killing was the result of passion, rather than
rational decision. People v. Borchers (1958) 50 Cal.2d 321.

Generally, if the Defendant killed under provocation so great as to produce that
response in a reasonable person, there is no malice aforethought and the crime is
manslaughter. People v. Ogen (1985) 168 Cal.App.3d 611.  Most cases require that
the provocation be objectively reasonable: i.e., what a reasonable person would do
under the circumstances. (See, e.g., People v. Berry (1976) 18 Cal.3d 509, 515.)  
However, the true test is both objective and subjective: would a reasonable person
have reacted this way, and was the Defendant actually responding to the
provocation. In re Thomas C. (1986) 183 Cal.App.3d 786, 798.  

Generally, an intentional killing during mutual combat which does not rise to the
level of complete self defense may constitute heat of passion where: (1) there was
no cooling off period; (2) the fight was relatively equal; and (3) neither side did
anything to take advantage. People v. Sanchez (1864) 24 Cal. 17, 27.

Additionally, provocation need not be a single event; a series of acts may be
cumulative over a long period of time and can constitute provocation. People v.
Kanawyer (2003) 113 Cal.App.4th 1233.

In assessing provocation, the focus of inquiry is on the conduct of the victim.
People v. Spurlin (1984) 156 Cal.App.3d 119, 125-128.  “The essence of the
sudden quarrel/heat of passion voluntary manslaughter is that the killer is so
provoked by acts of the victim, that he strikes out in the heat of passion, an
emotion that obliterates reason that would prevail in the mind of a reasonable
person.” People v. Johnson (2003) 113 Cal.App.4th 1299.

When the facts suggest heat of passion and provocation, the bad acts of the victim
toward the Defendant are admissible.  However, while the overall relationship
between the Defendant and victim are relevant and admissible, there must be
some triggering event which is temporarily related to the actual killing.  People v.
Kanawyer (2003) 113 Cal.App.3d 786.   This also means that the character of the
victim may be admissible if the Defendant knew of it.  People v. Carter (1957) 48
Cal.2d 737, 749-750.

Malice aforethought is negated only where the Defendant has not had a chance to
cool off after the provocation.  There appears to be both an objective and
subjective component to the cooling off period: would a reasonable person’s
passions have cooled; and did the Defendant’s passions cool.  People v. Gosh
(1923) 63 Cal.App. 609, 616-617.

IMPERFECT SELF-DEFENSE:
Imperfect self defense is an intentional killing done in the honest but
unreasonable belief in the necessity for self defense.  In re Christian S. (1994) 7 Cal.
4th 768; People v. Flannel (1979) 25 Cal.4th 768.  This is not an actual defense,
but it does negate the malice required to sustain a murder conviction. People v.
Barton (1995) 12 Cal.4th 186, 200.

There are basically three elements of imperfect self defense: (1) The Defendant
actually believed that he was in imminent danger of being killed or suffering great
bodily injury; and (2) the Defendant actually believed that the immediate use of
deadly force was necessary; and (3) one or both of those two beliefs was wrong or
unreasonable.  (If the Defendant actually had both beliefs and the beliefs were
reasonable, then he or she may have acted in self defense and not guilty of any
crime.)  The idea behind imperfect self defense is that a person is less morally
culpable when he or she actually holds this belief, that self defense was necessary,
even if that belief was unreasonable.

The courts have stated that, Imminent peril means that the peril must have
existed or appeared to the Defendant to be immediate and present and not
prospective or in the near future. People v. Aris (1989) 215 Cal.App.3d 1178.




When a person commits an unlawful killing but does not intend to kill and does
not act with conscious disregard for human life, then the crime is involuntary
manslaughter.




Without knowing the particular facts of a case it is difficult to cover every defense
to homicide.  However, there are various defenses which should always be
considered when the defendant is charged with homicide.  Those defenses include
but are not limited to:
(In No Particular Order)
1. Accident
2. Self-Defense
3. Alibi
4. Third Party Culpability
5. Battered Person's Syndrome
6. Insanity
7. Proximate Cause of the Death
8. Reasonable Doubt as to the Elements of the Crime
9. Heat of Passion/Sudden Quarrel when Prosecutor only charges murder
10. Lack of Malice when Prosecutor only charges Murder
11. Imperfect Self-Defense when Prosecutor only charges Murder




There are base statutes that prescribe the punishment for homicide cases.  
However, there are many factors that could affect how long a defendant found
guilty is punished.  The
Penal Code prescribes specific enhancements that may add
to the sentence of a defendant who is found guilty.  For example, if a defendant
were to use a firearm in the commission of the crime or commit the crime in
furtherance of a criminal street gang, this would add to the statutory sentence in a
homicide case.  Thus, without knowing the specific facts of a case it is difficult to
say what the punishment will be.  However, the following is a list of base terms for
homicide offenses:

1st Degree Murder:                25 years to Life (or death in capital cases)
2nd Degree Murder:               15 years to Life
Voluntary Manslaughter:         3, 6, or 11 Years in the State Prison
Involuntary Manslaughter:       2, 3, or 4 Years in the State Prison
MURDER AND HOMICIDE
DEFINITION OF MALICE
1ST AND 2ND DEGREE MURDER:
VOLUNTARY MANSLAUGHTER:
INVOLUNTARY MANSLAUGHTER:
DEFENSES TO HOMICIDE
PUNISHMENT IN HOMICIDE CASES
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Law Offices of Brian R. Mason.  858-444-5256.  Attorney Brian R. Mason, California State Bar No. 257420, is responsible for
this web page.  This web page is meant for information purposes only.  Nothing in this page shall be construed as legal advise
and nothing in this page creates an attorney client relationship with anyone reading the page.   Additionally, the recent results
posted above do not guarantee victory in any individual case, results may vary.  
This page is meant only as a general and
broad reference to the definition of some Homicide crimes and defenses.  However, this page does not list all elements
to every homicide crime or defense, nor does the page list all defenses.  Every case is different and based on the facts
of that particular case.  Do not rely on this information in any legal proceeding.
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