This work presents the psychiatric-forensic facts and correlates of an historical event. In 1926 a woman named Violet Gibson, an English citizen, shoots Benito Mussolini. This event represents a risk of compromising the relationship between Italy and Great Britain. As a consequence, the woman cannot be regarded as being sane and therefore she needs a psychiatric evaluation which could justify her insane act. Two distinguished clinicians of that time were entrusted of the evaluation: Sante De Sanctis and Augusto Giannelli. Violet Gibson was diagnosed as paranoid and she ended up in a mental hospital, where she spent her last days.