Leonardo DiCaprio
John Edgar Hoover
Josh Lucas
Charles Lindbergh
Josh Hamilton
Robert Irwin
Judi Dench
Anna Marie Hoover
Geoff Pierson
Mitchell Palmer
Gunner Wright
Dwight Eisenhower
Dermot Mulroney
Colonel Schwarzkopf
Kaitlyn Dever
Palmer's Daughter
Jessica Hecht
Emma Goldman
Denis O'Hare
Albert Osborne
Damon Herriman
Bruno Hauptmann
Sadie Calvano
Edgar's Niece
Roberta Bassin
Roosevelt's Secretary
Emily Alyn Lind
Shirley Temple
Barbara Keegan
Bombing Witness
Jeffrey Donovan
Robert Kennedy
Geoff Stults
Raymond Caffrey
Aaron Lazar
Prosecutor Wilentz
Cheryl Lawson
Palmer's Wife
David A. Cooper
Franklin Roosevelt
Kelly Lester
Head Secretary
Jack Donner
Edgar's Father
Dylan Burns
Hoover as a Child
Michael James Faradie
Bureau Agent (1919)
Josh Stamberg
Agent Stokes
Christian Clemenson
Inspector Schell
Billy Smith
Secret Service Officer
Ken Howard
Harlan Fiske Stone
Steve Monroe
Restaurant Host
Stephen Root
Arthur Koehler
Gary Werntz
Attorney General
David Clennon
Senator Friendly
Michael O'Neill
Senator McKellar
Eric Frentzel
William Mahan
Kyle Eastwood
Stork Club Band
Shannon McClain Robertson
African American Woman (as Shannon McClain)
Leslie Augustine
Lindbergh Nanny (uncredited)
Fileena Bahris
Starlet (uncredited)
Jennipher Foster
Lucille Ball (uncredited)
Belinda Gosbee
Gangster's Moll (uncredited)
Elizabeth Karr
Secretary (uncredited)
Martin Luther King Jr.
Self (archive footage) (uncredited)
Lindsay Lucas-Bartlett
Hollywood Starlet (uncredited)
Pat Nixon
Self (archive footage) (uncredited)
Richard Nixon
Self (archive footage) (uncredited)
Jamie Noel
Racetrack Gambler (uncredited)
Miles Fisher
Agent Garrison
Robert Fleet
Edgar's Mother's Doctor
Emily Banks
Radical Citizen (uncredited)
Scot Carlisle
Agent Williams
Ryan McPartlin
Lawrence Richey
