Grint plays a young apprentice to a man he believes is a private detective, but who is really a hit man in the movie, based on the 1993 French film Cible ??mouvante.??? Grint made his professional acting debut when he won the role of Ron Weasley in 2001's Harry Potter and the Sorcerer's Stone.??? His performance in that film brought him a British Film Critics' Circle Award nomination for Best Ne