Himself (also archive footage)
Edward Asner
Himself (as Numa Bertel)
Numa V. Bertel Jr.
Himself (also archive footage)
Walter Cronkite
Himself (as Jim Dieugenio)
Jim DiEugenio
Herself (as Mary Farrell)
Mary Ferrell
Himself (also archive footage)
Jim Garrison
Himself (as Richard Goodwin)
Richard N. Goodwin
Himself (as Robert Groden)
Robert J. Groden
Himself
Edward A. Haggerty
Herself (also archive footage)
Rosemary James
Himself (also archive footage)
Tommy Lee Jones
Himself (also archive footage)
Mark Lane
Himself (also archive footage)
Jack Lemmon
Himself (also archive footage)
Walter Matthau
Himself (as Major John Newman)
John M. Newman
Himself (also archive footage)
Gary Oldman
Himself (as Tip O'Neill)
Thomas P. 'Tip' O'Neill
Herself (also archive footage) (as Marina Oswald Porter)
Marina Oswald
Himself/Narrator (also archive footage)
Ike Pappas
Himself (as Col. Fletcher Prouty)
L. Fletcher Prouty
Himself (also archive footage) (as Perry Russo)
Perry R. Russo
Herself (also archive footage)
Sissy Spacek
Himself (as Cyril Wecht)
Cyril H. Wecht
Himself (archive footage)
Lee Harvey Oswald
Himself (archive footage) (as Mr. Wade)
Henry M. Wade
Himself (archive footage) (as Capt. Fritz)
Will Fritz
Himself (archive footage)
Jack Ruby
Himself (archive footage)
Lyndon Johnson
Himself (archive footage)
Earl Warren
Himself (archive footage)
Gerald Ford
Himself (archive footage)
J. Edgar Hoover
Himself, senator, Pennsylvania (R) (archive footage)
Arlen Specter
Himself (archive footage)
Allen Dulles
Himself (archive footage)
John F. Kennedy
Herself (archive footage)
Anita Hill
Himself, investigative reporter
Jonathan Kwitny
Himself, former US senator (archive footage)
Russell Long
Himself, New Orleans attorney (archive footage)
Dean Andrews
Himself (archive footage)
Clay Shaw
Himself, Iran Contra Hearings (archive footage)
Oliver North
Himself, Watergate Hearings (archive footage)
John Dean
Himself (archive footage)
Fidel Castro
Himself, Tampa Mafia Moss (archive footage)
Santo Trafficante
Himself, Mafia operative (archive footage) (as Johnny Rosselli)
Johnny Roselli
Himself, Chicago Mafia boss (archive footage)
Sam Giancana
Himself, Mafia chieftain of New Orleans (archive footage)
Carlos Marcello
Himself (archive footage)
Robert F. Kennedy
Himself (archive footage)
Jimmy Hoffa
Himself (archive footage)
Dwight D. Eisenhower
Himself (voice) (archive footage)
George Bush
Himself (archive footage) (as Edward Kennedy)
Ted Kennedy