William WindomMajor Rick Graves William WoodsonNarrator (voice) (uncredited) Michael RennieVice Chancellor Pierre Alquist John MilfordSheriff Lou Carver Lin McCarthyCol. Archie Harmon Simon ScottDr. John Slaton Richard O'BrienProf. Charles McKay Byron KeithAir Crash Investigator Hal TaggartJuror (uncredited) Ron NymanAlien (uncredited) Dabney ColemanCapt. Mitchell Ross William SargentDr. Ken Harrison Laurence NaismithProfessor Lindstrom Patricia SmithEdna Greely Robert KnappCongressman Joe Bonning James T. CallahanDr. Harry Mills Robert SorrellsDeputy Jim J.D. CannonPolice Lt. Ben Holman James DalyGen. Samuel Arlington Concannon Barney PhillipsEmmett Morgen Mary JacksonHattie Willis Suzanne PleshetteAnne Gibbs William SmithersAdam Lane Allen EmersonLibrary Alien Peter Mark RichmanAndrew Hatcher Robert H. HarrisDr. Stanley Frederickson Joanne LinvilleAngela Smith Lee FarrJustice Department Agent Michael HarrisMail Truck Driver Paul ComiPolice Sgt. Leeds Rayford BarnesAlien Deputy Eduard FranzPremier Thor Halvorsen Ted KnightAlien Air Force Major McEvoy Roddy McDowallLloyd Lindstrom Willard SageLieutenant James Jackie KendallProprietress Stuart LancasterSuperintendent Diana Van der VlisEve Doneghan Arthur HillWarren Doneghan Carol Eve RossenSelene Lowell Jonathan GoldsmithKevin Ryan Phillip PineSgt. Hal Corman Robert EmhardtOliver Ames Kathleen WiddoesEllen Woods Jeanette NolanMiss Havergill William BramleyConstable Gabbard Jim HalfertyFred Danielson Andrew DugganGeneral Theodore Beaumont Robert OsterlohCarl Wyeth Rick MurrayParking Attendant James WhitmoreHarry Swain William TalmanColonel Griffith Milton SelzerA.J. Richards Susan StrasbergDiane Oberly Ernest SarracinoLeo Rinaldi Robert DoyleSgt. Walter Ruddell Murray MathesonDr. Reynard Jacqueline MayoSobbing Woman Nancy WickwireEvelyn Bowers Ron StokesAlien at Controls Joseph CampanellaFather Joe Robert Walker Jr.Nick Baxter Lynn LoringMadeline Flagg Joseph V. PerryJoe Bagely Len WaylandDeputy Wallace Mercedes ShirleyWoman Attendant Ralph ThomasDeputy in Charge Strother MartinCharlie Coogan John LuptonMaj. Clifford Banks John Meredyth LucasDirector Andrew J. McIntyreDirector Of Photography Meredith M. NicholsonDirector Of Photography Richard K. BrockwayEditor 
