John Mackenzie Director Danny Aiello Jack Ruby Actor Sherilyn Fenn Sheryl Ann DuJean, Candy Cane Actor Arliss Howard Maxwell Actor Tobin Bell David Ferrie Actor David Duchovny Officer Tippit Actor Richard C. Sarafian Proby Actor Joe Cortese Louie Vitali Actor Marc Lawrence Santos Alicante Actor Willie Garson Lee Harvey Oswald Actor Joe Viterelli Joseph Valachi Actor Carmine Caridi Sam Giancana Actor Stephen Davis Screenwriter Steve Golin Producer Sigurjon Sighvatsson Producer Michael Kuhn Executive Producer Phil Meheux Cinematographer Richard Trevor Film Editing John Scott Original Music David Brisbin Production Design Kenneth A. Hardy Art Director Lauri Gaffin Set Decoration Susie DeSanto Costume Design Johanna Ray Casting