Desc: Léon: Sát Thủ Chuyên Nghiệp: Directed by Luc Besson. With Jean Reno, Gary Oldman, Natalie Portman, Danny Aiello. 12-year-old Mathilda is reluctantly taken in by Léon, a professional assassin, after her family is murdered. An unusual relationship forms as she becomes his protégée and learns the assassin's trade.