th ▁anni versary ▁of ▁her ▁death , ▁a ▁cold ▁case ▁inqu iry ▁was ▁launched ▁by ▁Th ames ▁Valley ▁Police ▁as ▁part ▁of ▁a ▁greater ▁investigation ▁into ▁un sol ved ▁cr imes ▁going ▁back ▁over ▁ 5 0 ▁years . ▁The ▁detect ive ▁super int endent ▁in ▁charge ▁of ▁the ▁case ▁appe aled ▁for ▁witness es ▁to ▁come ▁forward . ▁ ▁In ▁ 2 0 1 2 , ▁police ▁were ▁also ▁looking ▁at ▁an ▁attack ▁on ▁a ▁student ▁nur se ▁in ▁Tr ing ▁that ▁at ▁the ▁time ▁was ▁tent atively ▁linked ▁to ▁Ell is ' ▁death . ▁The ▁woman ▁was ▁ra ped ▁and ▁hit ▁over ▁the ▁head ▁with ▁a ▁bl unt ▁instrument , ▁and ▁police ▁believed ▁the ▁attack er ▁was ▁leaving ▁her ▁for ▁dead , ▁but ▁mi rac ul ously , ▁she ▁surv ived . ▁The ▁attack ▁occurred ▁only ▁ ▁away ▁from ▁where ▁Ell is ▁was ▁found ▁murder ed ▁and ▁whilst ▁there ▁were ▁no ▁definit ive ▁links , ▁certain ▁characteristics ▁were ▁very ▁similar . ▁ ▁In ▁November ▁ 2 0 1 7 , ▁Th ames ▁Valley ▁Police ▁again ▁announced ▁that ▁they ▁were ▁looking ▁at ▁the ▁case . ▁This ▁time , ▁however , ▁they ▁had ▁a ▁DNA ▁sample ▁which ▁had ▁been ▁tested ▁against ▁ 2 0 0 ▁men , ▁as ▁well ▁as ▁the ▁national ▁DNA ▁database . ▁DNA ▁analysis ▁indicated ▁that ▁the ▁sample ▁belonged ▁to ▁a ▁male ▁and ▁whilst ▁the ▁family ▁of ▁Ell is ▁remained ▁hope ful , ▁they ▁acknowled ged ▁that ▁the ▁perpet r ator ▁could ▁be ▁dead , ▁as ▁his ▁age ▁was ▁assumed