主演：Hugh Marlowe  Joan Taylor  Donald Curtis  

導演：Fred F. Sears  

簡介：WhiledrivingthroughthedesertwithhiswifeCarolMarvintoamilitarybasetosendtheeleventhrockettotheorbitofEarthforhelpingtheexplorationoftheouterspaceintheOperationSkyHook,Dr.RussellA.MarvinandCarolseeaflyingsaucerandaccidentallyrecordsamessageintheirtaperecorder.Onceinthebase,Dr.Russellisinformedbyhisfather-in-lawandgeneralthatthetenfirstsatelliteshadmysteriouslyfeltonEarth.WhenDr.Russelldecodesthemessage,heencountersthealiensthataskhimtoscheduleameetingwiththeleadersofEarthinWashingtonin56dayswiththeintentiontoinvadeEarthwithoutpanickingthepopulation.Dr.Russelldevelopsananti-magneticweaponthatbecomesthatlasthopeofhumanraceagainstthehostilealiensaaa