al case. In this case, Daniel M'Naghten intentionally, and with premeditation, killed an assistant to the Prime Minister. M'Naghten claimed he was being persecuted by the Prime Minister and he pled insanity at the trial. Physicians testified for the defendant based on the behavior of M'Naghten after the crime took place. The prosecution made many attempts at disproving the plea of insanity, by illustrating M'Naghten's behavior in planning the assassination. The physicians were well respected and the prosecution agreed to stop the case and the defendant was declared insane. As expected, Queen Victoria and the House of Lords disapproved of the verdict. They called on fifteen judges of the common law courts to answer a series of questions regarding the law of insanity, as it was used in the case of Daniel M'Naghten. Their answers became known and established as the M'Naghten Rule. T
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