Steven Walter Robinson, better known as the Fullerton AMC slasher, was improperly convicted and sentenced to 22 years to life in prison for attempting to murder fellow theatergoers at a 2008 screening of the horror film The Signal.
“Substantial evidence suggested the defendant may not have formed the intent to kill, premeditated or deliberated, due to a mental disorder,” wrote Justice Raymond Ikola for a three-justice panel that included Eileen Moore and Richard Aronson. “The defendant testified he hallucinated during the movie, feeling a 'sense of evil' coming from the movie screen. And the psychologist found the defendant was 'very mentally impaired.' His 'longstanding psychiatric symptoms' included 'psychotic thoughts (hearing voices, delusions)' and 'a history of depression with schizoid and paranoid features going well back into early adolescence.'”