AbigailClayton獨(dú)自一人生活,已將近20年沒有離開她的公寓。當(dāng)她的鄰居死亡,偵探FrankGiardello登門造訪展開調(diào)查,她原本秩序井然的世界開始瓦解。AbigailClayton獨(dú)自一人生活。一個(gè)人非常孤獨(dú)。實(shí)際上,這位女繼承人沒有離開她的曼哈頓公寓已將近20年。當(dāng)她年邁的鄰居死亡促使紐約市警察局兇殺案?jìng)商紽rankGiardello登門造訪展開調(diào)查,內(nèi)心恐懼不安的AbigailClayton看到那位偵探在她門外,詢問她。AbigailClayton曾試圖收購(gòu)現(xiàn)在空置的那個(gè)公寓以確保她的隱私,當(dāng)新租戶莉蓮和查理搬進(jìn)來時(shí)就更加煩惱了。AbigailClayton焦急地從她的前門的安全窺視孔監(jiān)視她的新鄰居,但當(dāng)她終于面對(duì)面地遇到了莉蓮和查理時(shí)她原本秩序井然的世界開始瓦解,她庇護(hù)的存在也開始成為意外和恐怖的方式威脅著。Anheiresswho’sbeenshutinsideherapartmentbuildingfornearlytwodecadesisforcedtoconfrontherfearsafteroneofherneighborsiskilledandadetectivearrivestobegintheinvestigation.AbigailClaytonlivesalone.Veryalone.Infact,theattractiveheiresshasnotleftherManhattanloftapartmentforalmosttwodecades.Thefamousdaughterofawealthyindustrialist,Abigaildisappearedfromthepryingeyesofthepressandtheintrusivenessofherfamilyonher18thbirthday,thedayshereceivedhermassiveinheritance.Duringyearsofself-imposedisolation,Abigailhashadcontactwithonlytwopeople-herbuilding’sConcierge,Klandermann,withwhomshecommunicatesvianotes-andDr.RaymondFontaine,alongtimefamilyfriendandhersoleconfidantformostofherlife.WhenthedeathofherelderlyneighborpromptsNYPDHomicideDetectiveFrankGiardellotolaunchaninvestigation,theagoraphobicAbigailisdistressedtofindhimoutsideherdoor,askingtoquestionher.Havingtriedtoacquirethedeadwoman’snowvacantapartmenttoensureherprivacy...AreclusiveManhattanheiressfindshercarefullystructuredworldbeginningtocrumbleafterherelderlyneighbordies,andayoungcouplemovesintothevacantapartment.Onher18thbirthday,AbigailClayton(SelmaBlair)receivedastaggeringinheritancefromherlatefather,anaffluentindustrialist.Thatsameday,Abigailalsoescapedtheprobinglensesofthepaparazzibysealingherselfawayfromtheworldinhermassiveloft.Nearlytwentyyearslater,theonlypeopleAbigailinteractswithareKlandermann(KevinPollak)theConcierge,andDr.RaymondFontaine(BeauBridges),atrustedfamilyfriend.Oneday,Abigail’selderlyneighbordiesundermysteriouscircumstances,andHomicideDetectiveFrankGiardello(GiovanniRibisi)comesknockingonAbigail’sdoorlookingforanswers.Concernedthattheopenapartmentcouldprovideaperfectperchforpryingeyes,Abigailinquiresaboutpurchasingittonoavail.Shortlythereafter,AbigailspiesCharlie(JasonLee)andLillian(AmySmart)movingintotheapartment.Intheweeksthatfollow,Abigailbeginsreligiouslyusingherpeepholetoscrutinizehernewneighbors’everymove.Butshecan’tstaylockedawayforever,andthemomentAbigailmeetsCharlieandLillianinperson,thenightmarebegins.AbigailClayton(SelmaBlair)livesalone.Veryalone.Infact,theheiresshasnotleftherManhattanapartmentforalmosttwodecades.WhenthedeathofherelderlyneighborpromptsNYPDHomicideDetectiveFrankGiardello(GiovanniRibisi)tolaunchaninvestigation,theagoraphobicAbigailisdistressedtofindhimoutsideherdoor,questioningher.Havingtriedtoacquirethenowvacantapartmenttoensureherprivacy,AbigailisfurtherupsetwhennewtenantsLillian(AmySmart)andCharlie(JasonLee)movein.Abigailanxiouslymonitorshernewneighborsfromthesafetyofherfrontdoor’speephole,butherwell-orderedworldbeginstounravelwhenshefinallyencountersLillianandCharlieface-to-faceandhershelteredexistencebecomesthreatenedinunexpectedandterrifyingwayseee