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Overview of Homicide and Manslaughter Law

Apr 14, 2025

Criminal Law Lecture Notes

Introduction to Criminal Offenses

  • Focus on specific criminal offenses related to homicide.
  • Homicide offenses:
    • Murder
    • Various forms of manslaughter
  • Aim: one lesson per offense due to their straightforward nature.

Understanding Homicide

  • Definition: Killing of an individual, either lawful or unlawful.
  • Types:
    • Murder
    • Manslaughter
    • Genocide
    • Assisted suicide

Murder

  • Definition: Killing with 'malice aforethought'.
  • Common Law Offense: No specific statute; defined by common law.
  • Lord Coke's Definition (17th Century):
    • "Murder is when a man of sound memory and age unlawfully killeth any reasonable creature in rerum natura under the king’s peace, with malice aforethought."
  • Key Components:
    • Actus Reus: Causing death of a person under king’s peace.
    • Mens Rea: Intention to kill or cause grievous bodily harm.

Case Studies

  • Crown vs. Maloney (1985):
    • Shooting contest led to accidental death.
    • Lack of intent to kill led to manslaughter conviction.
  • Crown vs. Hyam (1975):
    • Arson led to death of two children.
    • Conviction upheld due to foresight of consequences.
  • Crown vs. Woollin (1998):
    • Defined mens rea as intention to kill or cause grievous bodily harm.
  • Crown vs. Thabo Meli (1954):
    • Series of acts viewed as one continuing act for establishing coincidence of actus reus and mens rea.

Manslaughter

  • Types of Manslaughter:
    • Voluntary Manslaughter: Diminished responsibility, loss of control.
    • Involuntary Manslaughter

Voluntary Manslaughter

  • Diminished Responsibility (Section 52 of the Coroners and Justice Act 2009):
    • Requires abnormality of mental functioning.
    • Must arise from a recognized medical condition.
    • Must substantially impair ability to understand nature of conduct, form rational judgment, or exercise self-control.

Case Studies

  • Crown vs. Dowds (2012):
    • Voluntary intoxication not a recognized condition for diminished responsibility.
  • Crown vs. Conroy (2017):
    • Autism and ADHD recognized for diminished responsibility.
  • Crown vs. Gold (2016):
    • Substantial impairment defined as more than trivial.
  • Marine A Case (Sergeant Alexander Blackman):
    • Diminished responsibility through adjustment disorder.
  • Crown vs. Joyce (2017):
    • Paranoid schizophrenia as a main and significant factor for diminished responsibility.