Billy Milligan

Billy Milligan was an American man who gained notoriety for being the first person to be acquitted of a crime due to dissociative identity disorder (formerly known as multiple personality disorder). Milligan's case drew widespread attention in the 1970s when he was arrested for a series of crimes, including armed robbery and rape. His defense team argued that his actions were the result of the various personalities that inhabited his mind, leading to a landmark legal decision in which he was found not guilty by reason of insanity.

Milligan's case brought significant awareness to the complexities of dissociative identity disorder and sparked debates about the intersection of mental health and the legal system. Despite the controversy surrounding his acquittal, Milligan's story continues to be studied and discussed in the fields of psychology and law as a unique and compelling example of the challenges posed by mental illness in the criminal justice system.