简介：ArrivinginLondonattheendofthe19thCentury,theDoctorandLeelamakefriendswithapolicepathologist,ProfessorLitefoot,andlearnthathairstakenfromtheclothingofadeadbodyfoundfloatingintheThamesseemtohaveoriginatedfromaverylargerat. TheDoctor'sinvestigationstakehimfirsttothesewers,wherethereareindeedgiantratsontheloose,andthentothePalaceTheatre,whereastagemagician,LiH'senChang,isprocuringyounggirlsforhismaster,theancientChinesegodWeng-Chiang.Weng-ChiangisinfactMagnusGreel,awarcriminalfromthe51stCentury.Thejourneybackthroughtimehasdisruptedhismolecularstructureandhenowneedstofeedonthelifeforceofothers-hencehisusefortheyounggirls.HehascometoLondontoretrievehislosttimecabinet,whichisinthepossessionofLitefoot.InfiltratingLitefoot'shomewithChang'sventriloquistdollMrSin-acomputerisedhomonculuswiththebrainofapig-heretrievesthecabinetandpreparestotravelbacktohisowntime. TheDoctor,aidedbyLeela,LitefootandHenryGordonJago,theproprietoroftheTheatre,trackshimdowntohislairandtrapshimbeforehecanescape.Greelfallsintohislifeforceextractionmachineanddisintegrates.TheDoctoristhenattackedbyMrSinbutmanagestodisconnectitscircuitry,renderingitinanimate.…