Fifteen-year-oldBarnabasBopwrightisproudtoliveinthegreatestcityonearth.Butundertheshinyexteriorlurksthehiddencostofthecity’sskyscrapingsuccess.Onhiswaytoschool,Barnabasdiscoversatransitmapwithanunknownsubwayline.Soonhe’sonanimpossibletrain,runningfromauthoritieswhohaveguardedthecity’sdarkmysteriesforacentury.ThesubwaybringsBarnabastoahiddenvalleyoutsidethecitywherehe’sdrawnintoaterrifyingworldofdeceptionandrevenge.Inthevalley,Barnabasdiscoversnewfriendships,adeath-defyingcircus,anevilemporium,andasurprisingattractionforanotherboy.Butwhenhisinvestigationsuncoveraterrorplottodestroythecityheloves,Barnabasrealizesit’suptohimtosavehishomeandbringdeadlysecretsintothelightbeforeit’stoolate.
