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Broderick Crawford as J. Edgar Hoover |
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James Wainwright as Young Hoover |
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Michael Parks as Robert F. Kennedy |
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José Ferrer as Lionel McCoy |
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Celeste Holm as Florence Hollister |
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Rip Torn as Dwight Webb |
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Dan Dailey as Clyde Tolson |
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Ronee Blakley as Carrie DeWitt |
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Howard Da Silva as Pres. Franklin D. Roosevelt |
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John Marley as Dave Hindley |
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Michael Sacks as Melvin Purvis |
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Raymond St. Jacques as Martin Luther King |
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June Havoc as Hoover's Mother |
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Lloyd Nolan as Attorney General Harlan Stone |
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Andrew Duggan as Pres. Lyndon B. Johnson |
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Jack Cassidy as Damon Runyon |
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George Plimpton as Quentin Reynolds |
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Lloyd Gough as Walter Winchell |
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William Jordan as Pres. John F. Kennedy |
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Brad Dexter as Alvin Karpis |
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George D. Wallace as Senator Joseph McCarthy |
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Henderson Forsythe as Suydam |
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Fred J. Scollay as Putnam |
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William Wellman Jr. as Dwight Webb Sr. |
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Ellen Barber as Janice Harper |
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Art Lund as Benchley |
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Mary Alice Moore as Miss Bryant |
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Jim Antonio as Senator Kenneth McKellar |
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Gregg Abels as President's Aide |
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Dan Resin as President's Advisor |
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James Dixon as Reilly |
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Penny du Pont as Newscaster |
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Alvin Miles as Valet |
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John Bay as Heywood Brown |
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Brooks Morton as Earl Warren |
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Richard M. Dixon as The President |
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James Dukas as Frank |
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Ron Faber as Hijacker |
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Sam Chew Jr. as FBI Agent |
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Paul Thomas as FBI Agent |
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Ken Harvey as FBI Agent |
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Jack Drummond as FBI Agent |
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Colin Bremner as FBI Agent |
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Dana Rowe as FBI Agent |
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Hanns Manship as FBI Agent |
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Ed Nast as FBI Agent |
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Tanya Roberts as Stewardess |
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Margo Lynn Curtis as Stewardess |
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Larry Pine as Kelly |
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John Stefano as Harry Brunette |
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Jennifer Lee Pryor as Ethel Brunette |
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Gwyn Gilliss as Mary Jo Kopechne (voice) |
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Bruce Weitz as Voice on Tape |
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Wyman Kane as Senator Markum |
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Gordon Zimmerman as Louis Lepke |
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Marty Lee as Mafia Man |
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Reno Carrel as Dillinger |
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Frank Rohrbach as White House Aide |
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Marshall Bordon as White House Aide |
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Joe Mayo as White House Aide |
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Joe ArrowSmith as Newspaper Man |
| Directing | Larry Cohen | Director |
| Writing | Larry Cohen | Writer |
| Costume & Make-Up | Ve Neill | Makeup Artist |
| Camera | Barry Abrams | Additional Photography |
| Camera | Mark Zavad | Additional Photography |
| Camera | Stefan Czapsky | Assistant Camera |
| Editing | Chris Lebenzon | Editor |
| Sound | Jane Landis | Sound |
| Directing | Reid Freeman | Assistant Director |
| Camera | Itzach Barouch | Key Grip |
| Production | Fenton Hamilton | Production Consultant |
| Directing | Cathy McNulty | Script Supervisor |
| Production | Fifi Oscard | Casting Consultant |
| Production | Carmen La Via | Casting Consultant |
| Costume & Make-Up | Rifka Gold | Makeup Artist |
| Costume & Make-Up | Josephine Cianella | Makeup Artist |
| Sound | Ken Hall | Music Editor |
| Sound | Robin Clarke | Music Editor |
| Crew | Ronni Chasen | Unit Publicist |
| Production | Peter Sabiston | Production Executive |
| Camera | Janelle Webb | Still Photographer |
| Crew | John M. Crewdson | Technical Advisor |
| Costume & Make-Up | Steve Neill | Makeup Artist |
| Sound | Robert Ghiraldini | Sound |
| Sound | Miklós Rózsa | Original Music Composer |
| Camera | Paul Glickman | Director of Photography |
| Production | Larry Cohen | Producer |
| Production | Arthur Mandelberg | Associate Producer |
| Production | Janelle Webb | Co-Producer |
| Art | Cathy Davis | Production Design |
| Costume & Make-Up | Lewis Freedman | Costume Design |
| Costume & Make-Up | Carolyn Loewenstein | Costume Design |
