In the 1980s, Multiple Personality Disorder (MPD) suddenly became the talk of the town. Tens of thousands of Americans were diagnosed with an illness that was previously unheard of. A trigger for this sudden epidemic was the release of a film, “Sybil”. Telling the dramatic story of a woman diagnosed with Multiple Personality Disorder, the film was shown across America making Sybil a household name. Now, Sybil’s original diagnosis is being challenged. The psychiatric community is divided and people are asking whether MPD exists at all. Mistaken Identity is a documentary searching for answers.