There is a movie "Primal Fear" where an actor named Norton plays a character who blacked out and has no memory of murdering the arch bishop. The lawyer hires a psychiatrist to evaluate his claim that he blacked out and has no memory of the crime. She was convinced, the lawyer was convinced, the prosecuting attorney was convinced, and the judge was convinced that he had indeed blacked out. However, it turns out that his claim of having blacked out was a result of malingering, and Norton was far more convincing than this woman was.
Untrue, Norton was a psychopath, who knowingly fakes a personality disorder ...not even remotely connected.