Naomi Watts has joined the cast of Warner Bros.' "
J. Edgar," opposite Leonardo DiCaprio, Ed Westwick, Damon Herriman, Armie Hammer, Ken Howard and Josh Lucas.
Watts will portray Helen Gandy, the longtime personal secretary to FBI director
J. Edgar Hoover. Gandy began working for Hoover in 1918 and continued in that role until he passed away in 1972.