Analysis of information sources in references of the Wikipedia article "Léon: The Professional" in English language version.
LEON is an action thriller, from 1994, in which an assassin takes in a 12-year-old girl after her family is murdered.
The film, a campy, stylish, ultraviolent tale about a solitary hit man (Jean Reno) and the little girl he grows to love, is called The Professional in America, Léon everywhere else. Natalie Portman was the girl, Matilda. It's now considered a cult classic.