James Woods
Roy Marcus Cohn
                                    Joe Don Baker
Sen. Joseph McCarthy
                                    Joseph Bologna
Walter Winchell
                                    Ed Flanders
Joseph N. Welch
                                    Frederic Forrest
Dashiell Hammett
                                    Lee Grant
Dora Cohn
                                    Pat Hingle
J. Edgar Hoover
                                    John McMartin
Older Doctor
                                    Josef Sommer
Albert Cohn
                                    Daniel Benzali
Francis Joseph Cardinal Spellman
                                    Tovah Feldshuh
Iva Schlesinger
                                    John Finn
Sen. Charles Potter
                                    Frances Foster
First Annie Lee Moss
                                    Allen Garfield
Abe Feller
                                    David Marshall Grant
Robert F. Kennedy
                                    Joe Grifasi
Gerald Walpin
                                    Daniel Hugh Kelly
Congressman Neil Gallagher
                                    Karen Ludwig
Ethel Rosenberg
                                    Novella Nelson
Second Annie Lee Moss
                                    Peter Maloney
Ray Kaplan
                                    Jeffrey Nordling
G. David Schine
                                    Fritz Weaver
Sen. Everett Dirksen
Chuck Aber
Sen. John L. McClellan
Lamont Arnold
Male Nurse
Steve Aronson
Judge Kaufman
Bernard Canepari
New York Judge
                                    Sam Coppola
Carmine Galante
Brandon Danziger
Young Roy Cohn
Patricia Dunnock
Female Nurse
                                    David Early
Chauffeur
Fanni Green
Juror #9
                                    Lance Lewman
Young Doctor
                                    Larry John Meyers
Frank Raichle
Zachary Mott
Sam Garfield
Marty Roppelt
German Reporter
                                    Joe Petruzzi
Peter Frazer
                                    Joseph Scoren
Milo Gandini
                                    John Seitz
Secretary of the Army Robert Stevens
Jack Skelly
New York Waiter
                                    Robin Thomas
Reporter
                                    Daniel von Bargen
Clyde Tolson
                                    Don Wadsworth
English Reporter #2
Rick Warner
Robert Morgenthau Jr.
Kate Young
French Reporter
Rik Billock
FBI Agent (uncredited)
                                    Nikolai Bulganin
Self (Parade Saluter) (archive footage) (uncredited)
Christopher Cussat
Restaurant Patron (uncredited)
                                    John W. Iwanonkiw
Courtroom Reporter (uncredited)
                                    Gary Cooper
Self (archive footage) (uncredited)
Citizen Cohn
Released