神秘博士：马里纳斯之匙  

Onasmallislandwithaglassbeach,surroundedbyanacidsea,ontheplanetMarinus,standsatowerwithmanysecretentrances.WithinthetowerisArbitan,KeeperoftheConscienceofMarinus,avastcomputerdevelopedtwomillenniaearlierasavastjusticemachinewhichkeptlawandorderacrosstheentireplanet.Forsevenhundredyears,theConsciencewasabsolute,radiatingitspoweracrosstheplanetMarinus,andeliminatingallthoughtofevil.ButthenYartek,leaderofthealienVoord,workedouthowtoresistitsimpulses.　　WhenTheDoctorandhiscompanionsBarbaraWright,IanChestertonandSusanForemanarriveontheisland,theyarebroughtintothetowertoanaudiencewithArbitan,whoexplainsthatthesocietyofMarinusisindanger.SeveralsubmersiblescontainingVoord,humanoidcreaturesprotectedbyamphibian-likeblackrubberwetsuits,havewasheduponthebeach.InspiredbyYartek,theVoordareseekingtoenterthetowerandtakecontroloftheConscience.　　ArbitanexplainsthattheConsciencehasnowbeenupgradedsufficientlytocontroltheVoordagain,butneedstobeactivated.YearsearlierArbitanhadpreventedtheConsciencefromfallingintoVoordcontrolbyseparatingthefiveKeysneededtoregulateit.Thefivekeysareindifferentlocations-oneisinArbitan'spossession,buttheotherfourarescatteredoverMarinus.Thekeyscanonlybefoundbyfollowingdirectionspre-setintotraveldials,watch-likedeviceswiththepowertotransporttheweareracrosstheplanettothecorrectlocations.ArbitanasksthattheDoctorandhisfriendshelphimfendofftheVoordbygatheringthekeystogether.Othershavetriedtoaccomplishthistask-evenArbitan'sowndaughter-butnonehavereturnedtothetower.　　TheDoctorrefusesArbitan'srequest,butisunabletoaccesstheTARDISduetoaforcefieldArbitanplacesaroundtheship.AndsotheDoctorandhiscompanionsarecoercedtoaidArbitan.Asthefourteleportawayfromthetowerusingthetraveldials,ArbitanisattackedandstabbedtodeathbyaVoordthathassecretlygainedaccesstothetower.　　ThefirstlocationvisitedbythetravellersistheCityofMorphoton.Theseeminglyadvancedandpacifistinhabitantsimpressthetravellerswiththeluxuries,advancesandaestheticsofthecity.Butallisnotasitseems.Barbaraisthefirsttorealizethetruthwhenahypnoticdiscintendedtomakehermindreceptivetothehypnoticpulsesslipsoffherforehead,causinghertorealisethatMorphotonisactuallyaplaceofdirtandsqualorratherthanbeautyandluxury.UnknowntotheDoctorandcrew,Morphotonisgovernedbyfourbraincreatureswithhideouseyesonstalkswho,havingoutgrowntheirbodies,liveinlargebelljarsandcommunicatethroughtheirlife-supportmachines.TheBrainsofMorphotonusehypnosistocontrolthehumanpopulation,andtheentireCityissubjugatedtotheirwill.　　OncetheBrainsrealizeBarbarahasseenthetruthandisthusimpervioustotheirhypnoticcontrol,theyorderthatshebekilled.Barbaraescapesandhidesinthecity,theremakingcontactwiththeslavegirlSabetha,whohasbeenblamedforBarbara'sawakeningandsentencedtodeath.BarbaradeducesSabethaisArbitan’smissingdaughter,andseesSabethawearsoneoftheKeysaboutherneck.BarbarahelpsbreakSabetha'sconditioning,andtogethertheyescapeanddestroythejarsandequipmentprotectingtheBrains.Withtheirlife-supportruined,theBrainsdie,andallthehumansubjectsofthecityarefreed.AnotherslavecalledAltosremembershetoowassenttoMorphotonbyArbitan,andheandSabethadecidetojointheDoctorandhisfriendsontheirquest.Thesixnowsplitup,withtheDoctorgoingaheadtofindthefinalkeyintheCityofMillennius,whiletheothersattempttofindthesecondkeyinthenextdestination.　　Thenextlocationforthefivesearchersisadangerousscreamingjungle,whichhasaparticularlydebilitatingeffectonthetelepathicSusan.Inthejungleisanancienttempleovergrownwithplants.MuchofthefloraishostileandthetravellersarerelievedtofindthenextKeysoeasily,proppedonthetopofastatueinthetemple.However,this"Key"isadecoyand,whentouched,activatesancientmachinerythatcausesthestatuetomove.Indeed,thewholelocation-jungleandtemple-isaplaceofdangerandtraps.WhenBarbaraiscaughtinthestatuemechanismanddisappearsintothetemple,Sabethaarguesshemayhavepossiblyusedhertraveldialtomoveontothenextlocation.Sabethacomparesthe"Key"BarbarafoundwithheroriginalandrealizestheeasilyfoundKeyisactuallyafake.WhileIanremainsatthetempletosearchfortherealKey,Altos,SabethaandSusangotothenextlocationtosearchforBarbara.　　Ianactivatesthestatuemechanismandisalsotakenintothetemple,wherehefindsBarbaraagain.Hidinginthetempleisanagedanddyingscientist,Darrius,whomIansavesfromanattackbyacreepingvine.Veryweak,theoldmanexplainsthetrapsofthetemplearetofooltheVoord,andthathetooisafriendofArbitan.Beforedying,DarriustellsIanandBarbaratheKeyishiddenin"D-E-3-O-2."Theplants,mutatedbyagrowthacceleratorbuiltbyDarrius,becomemoreandmoreaggressive.ThetwofriendsonlyjustmanagetoretrievetheKeyfromanexperimentjarbeforethevegetationoverrunsthetemple.　　IanandBarbaranowteleporttoanicywastelandwheretheymeettheduplicitoustrapperVasor,whostealstheirKeysandsendsIanbackintothewastelandswherehehopeshewillbeeatenbypacksofwolves.InthewastesIanfindsAltos,boundandabandoned,andworksoutVasoristoblame.IanandAltosreturntothetrapper’shutandconfronthim,forcingthewickedmantorevealthestolenKeysinhispossessionandtotakethemtotheicecaveswherehehadearlierabandonedSabethaandSusan.ThetwogirlshavemeanwhilesearchedtheicycavesthemselvesanduncoveredmechanizedIceSoldiers.ThetravellersaresoonreunitedandfindthenextKeyfrozeninablockofice.TheiractinremovingitrevivestheIceSoldiers,whobeginaviciousrampage.Theyfleebacktothetrappers'cottageandretrievetheirstolendials,gettingreadytoescape.VasortakesSusanhostageanddemandsthattheystay.AnIceSoldierstabshimdownfrombehindandtheyescape.　　WhenthetravellersreachthenextlocationIanfindshimselfaccusedofthemurderofEprin,afriendofAltos,whohaddiscoveredthekeyshortlybeforehisdeath.TheKeyhasnowdisappearedandIanisaccusedoftheftandEprin’smurder.ThepunishmentwillbedeathifhefoundguiltybeforethecourtofMillennius.TheothertravellersarereunitedinadvanceofIan’strial,atwhichtheDoctortakesontheroleofdefencecounsel.HesucceedsinpostponingthetrialfortwodayswhilehegathersevidenceandusesthistimetoworkoutwhatreallyhappenedtoEprin.Heworksoutthatthereliefguard,Aydan,isimplicatedinthemurder,butAydantooismurderedduringthecourseofthetrialbeforehecanrevealthetruthoftheplot.ThingstakeaturnfortheworsewhenSusaniskidnappedandusedasahostagetotryandpersuadetheDoctornottoinvestigatethecrimesanyfurther.ThekidnapperisKala,Aydan’swidow,whoisinleaguewithEyesen,theCourtProsecutor,whohassucceededinpersuadingtheThreeJudgesofMillenniumtofindIanguiltyofEprin’smurder.Luckily,theothersfindSusanboundandgaggedinKala'sousebeforeKalacankillher,likeshedidtoherownhusband,andtheplotisuncovered.Tarron,theChiefInvestigatoroftheCity,isnowalsopersuadedofKala’sguiltbuttheymuststilluncoverheraccomplicetoproveIandidnotkillEprin.TheDoctorhelpsunmaskEyesenanduncoverthelastKey,whichhadbeenhiddeninthemurderweapon,andIanisfreed.　　ThetravellersnowreturntoArbitan’sislandusingtheirtraveldials.AltosandSabethahavetravelledaheadwithallbutthelastKeyintheirpossession.TheydonotknowtheoldKeeperisdeadandthatYartekisnowincharge,clothedinArbitan’srobestomaintaintheruse.YartekhasseizedthefirstfourKeysandholdsAltosandSabethaprisonerwhileheawaitsthefifthandfinalone.WhentheDoctorandhisthreefriendsarrivetheysoonrealizethattheVoordhavetakencontrolofthetowerandtheConscience.TheDoctorfreesSabethaandAltosandthenunmaskstheVoord.Iantoohasplayedhispart,andgivenYartekthefalsekeyfromtheScreamingJungle.WhenYartekplacesthefalseKeyintheConscience,themachineexplodesandheiskilledalongwiththeoccupyingVoord.TheDoctorandhisfriendsfleethetowerwithAltosandSabethabeforethegrowingblazeovertakestheancientstructure.　　维基百科：http://en.wikipedia.org/wiki/The_Keys_of_Marinus