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Example of a Case Inappropriate for the M’Naghten Insanity Defense

5 October, 2015 - 14:07

Susan wants to marry a single man, but he does not want the responsibility of caring for her children. Susan decides to kill her children. She drives her two sons, aged three and five, out to the lake. She puts the car in park, gets out, and then puts it in gear, watching as it drives into the water. Both of her sons drown. Later that day, Susan files a police report stating that a stranger kidnapped her children at gunpoint. While searching the area for the kidnapper, the police discover the children’s bodies and evidence indicating that Susan killed them.

Susan recants her kidnapping story and admits she killed her children. However, she claims she is not guilty by reason of insanity. Susan’s claim will probably not be successful if she killed her children in a jurisdiction that recognizes the M’Naghten insanity defense. Susan tried to mislead the police, demonstrating her awareness that she had done something wrong. Thus although Susan’s behavior appears mentally imbalanced, she clearly knethe difference between right and wrong, and her conduct is not excusable under M’Naghten’s rigid requirements.