Academy Award winner Clint Eastwood will direct a cast headed by Academy Award nominee Leonardo DiCaprio as Hoover, Ed Westwick, Damon Herriman, Armie Hammer and Josh Lucas. Tony and Academy Award winner Judi Dench is also reported to be part of the cast.
Dustin Lance Black, the Academy Award-winning screenwriter of "Milk," is penning the screenplay for the Warner Bros. film.
Howard will play U.S. Attorney General Harlan F. Stone. A Tony Award winner for Child's Play and an Emmy Award winner for "Grey Gardens" and the daytime children's program "The Body Human: Facts for Boys," he has appeared on Broadway in Rumors, 1600 Pennsylvania Avenue, The Norman Conquests, Seesaw, 1776 and Promises, Promises. He is the president of the Screen Actors Guild.