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
