1859Criminal defendant Daniel Edgar Sickles uses the insanity defense for the first time in an American court. A politician, soldier, and attorney from New York City, Sickles killed his wife’s lover, Philip Barton Key II. Sickles was acquitted by a jury who found him temporarily insane after he learned about his wife’s infidelity.1973Serial killer Juan Corona was sentenced to 25 life sentences for 25 murders. Born in Mexico, Corona murdered migrant farm workers and buried them in shallow graves in fruit …