Professional assassin Leon reluctantly takes care of 12-year-old Mathilda, a neighbor whose parents are killed, and teaches her his trade. A Luc Besson film, released in 1994, starring Jean Reno as Leon, Natalie Portman as Mathilda, Gary Oldman as Norman Stanfield and Danny Aiello as Tony. Two other titles for this movie are The Cleaner and The Professional (US title).