Leonardo DiCaprio
John Edgar Hoover
Acting
Armie Hammer
Clyde Tolson
Acting
Naomi Watts
Helen Gandy
Acting
Josh Lucas
Charles Lindbergh
Acting
Josh Hamilton
Robert Irwin
Acting
Judi Dench
Anna Marie Hoover
Acting
Geoff Pierson
Mitchell Palmer
Acting
Gunner Wright
Dwight Eisenhower
Acting
Dermot Mulroney
Colonel Schwarzkopf
Acting
Kaitlyn Dever
Palmer's Daughter
Acting
Adam Driver
Walter Lyle
Acting
Ed Westwick
Agent Smith
Acting
Jessica Hecht
Emma Goldman
Acting
Denis O'Hare
Albert Osborne
Acting
Lea Thompson
Lela Rogers
Acting
Damon Herriman
Bruno Hauptmann
Acting
Sadie Calvano
Edgar's Niece
Acting
Amanda Schull
Anita Colby
Acting
Roberta Bassin
Roosevelt's Secretary
Acting
Emily Alyn Lind
Shirley Temple
Acting
Barbara Keegan
Bombing Witness
Acting
Gerald Downey
FBI Agent
Acting
Jeffrey Donovan
Robert Kennedy
Acting
Geoff Stults
Raymond Caffrey
Acting
Thomas Langston
Young Boy
Acting
Lea Coco
Agent Sisk
Acting
Aaron Lazar
Prosecutor Wilentz
Acting
Cheryl Lawson
Palmer's Wife
Acting
Brady Matthews
Inspector
Acting
David A. Cooper
Franklin Roosevelt
Acting
Kelly Lester
Head Secretary
Acting
Jack Donner
Edgar's Father
Acting
Dylan Burns
Hoover as a Child
Acting
Jack Axelrod
Caminetti
Acting
Michael James Faradie
Bureau Agent (1919)
Crew
Josh Stamberg
Agent Stokes
Acting
Christian Clemenson
Inspector Schell
Acting
Billy Smith
Secret Service Officer
Acting
Ken Howard
Harlan Fiske Stone
Acting
Zach Grenier
John Condon
Acting
Johnny Cicco
Young Agent
Acting
Steve Monroe
Restaurant Host
Acting
Stephen Root
Arthur Koehler
Acting
Gary Werntz
Attorney General
Acting
David Clennon
Senator Friendly
Acting
Michael O'Neill
Senator McKellar
Acting
Eric Larkin
Fred Hunter
Acting
Eric Frentzel
William Mahan
Acting
Kyle Eastwood
Stork Club Band
Acting
Gregory Hoyt
Agent One
Acting
Jenny Phagan
Baker's Wife
Acting
Chris Caputo
Bronx Baker
Acting
Shannon McClain Robertson
African American Woman (as Shannon McClain)
Acting
Leslie Augustine
Lindbergh Nanny (uncredited)
Acting
Jennipher Foster
Lucille Ball (uncredited)
Acting
Belinda Gosbee
Gangster's Moll (uncredited)
Acting
Elizabeth Karr
Secretary (uncredited)
Production
Martin Luther King Jr.
Self (archive footage) (uncredited)
Acting
Lindsay Lucas-Bartlett
Hollywood Starlet (uncredited)
Acting
Pat Nixon
Self (archive footage) (uncredited)
Acting
Richard Nixon
Self (archive footage) (uncredited)
Acting
Jamie Noel
Racetrack Gambler (uncredited)
Acting
Miles Fisher
Agent Garrison
Acting
Robert Fleet
Edgar's Mother's Doctor
Acting
Emily Banks
Radical Citizen (uncredited)
Acting
Scot Carlisle
Agent Williams
Acting
Ryan McPartlin
Lawrence Richey
Acting