▁gar lic , ▁but ▁they ▁slowly ▁win ▁each ▁other ' s ▁trust . ▁Event ually , ▁the ▁two ▁comfort ▁each ▁other ▁rom ant ically ▁and ▁he ▁explains ▁some ▁of ▁his ▁find ings , ▁including ▁his ▁theory ▁that ▁he ▁developed ▁imm unity ▁against ▁the ▁in fection ▁after ▁being ▁bit ten ▁by ▁an ▁inf ected ▁v amp ire ▁bat ▁years ▁ago . ▁He ▁wants ▁to ▁know ▁if ▁the ▁woman , ▁named ▁Ruth , ▁is ▁inf ected ▁or ▁imm une , ▁v ow ing ▁to ▁treat ▁her ▁if ▁she ▁is ▁inf ected , ▁and ▁she ▁rel uct antly ▁allows ▁him ▁to ▁take ▁a ▁blood ▁sample ▁but ▁suddenly ▁knock s ▁him ▁un cons cious ▁as ▁he ▁views ▁the ▁results . ▁When ▁Ne ville ▁w akes , ▁he ▁disco vers ▁a ▁note ▁from ▁Ruth ▁conf ess ing ▁that ▁she ▁is ▁indeed ▁a ▁v amp ire ▁sent ▁to ▁sp y ▁on ▁him ▁and ▁that ▁he ▁was ▁responsible ▁for ▁the ▁death ▁of ▁her ▁husband , ▁another ▁v amp ire . ▁The ▁note ▁further ▁suggests ▁that ▁only ▁the ▁und ead ▁v amp ires ▁are ▁path olog ically ▁violent ▁but ▁not ▁those ▁who ▁were ▁alive ▁at ▁the ▁time ▁of ▁in fection ▁and ▁who ▁still ▁surv ive ▁due ▁to ▁chance ▁mut ations ▁in ▁their ▁b acter ia . ▁These ▁living - in fect ed ▁have ▁slowly ▁overcome ▁their ▁disease ▁and ▁are ▁attempting ▁to ▁build ▁a ▁new ▁society . ▁They ▁have ▁developed ▁medic ation ▁that ▁dimin ishes ▁the ▁worst ▁of ▁their ▁sympt oms . ▁Ruth ▁war ns ▁Ne ville ▁that ▁her ▁feelings ▁for ▁him