gre at ▁cry stal " ▁with ▁which ▁it ▁hoped ▁to ▁restore ▁its ▁cor p ore al ▁existence . ▁The ▁Doctor ▁was ▁gu ided ▁by ▁Do j jen , ▁an ▁old ▁myst ic ▁who ▁showed ▁him ▁how ▁to ▁find ▁the ▁" st ill ▁point ". ▁When ▁the ▁Mar a ▁tried ▁to ▁make ▁its ▁return ▁at ▁the ▁ceremony , ▁the ▁Doctor ▁concentr ated ▁his ▁thought ▁with ▁a ▁small ▁rep lica ▁of ▁the ▁great ▁cry stal , ▁and ▁by ▁finding ▁the ▁still ▁point ▁was ▁able ▁to ▁rep el ▁the ▁Mar a . ▁Then ▁by ▁gra bb ing ▁the ▁great ▁cry stal , ▁the ▁Doctor ▁broke ▁the ▁Mar a ' s ▁hold ▁over ▁its ▁controlled ▁vict ims , ▁and ▁destroyed ▁its ▁new ▁s nake ▁body . ▁This ▁time , ▁the ▁Mar a ▁had ▁apparently ▁been ▁perman ently ▁destroyed . ▁ ▁Unfortunately , ▁it ▁turns ▁out ▁that ▁the ▁Mar a ▁has ▁retre ated ▁deeper ▁into ▁T eg an ' s ▁mind . ▁The ▁Mar a ▁is ▁revis ited ▁in ▁the ▁ 2 0 1 0 ▁audio ▁story ▁The ▁C rad le ▁of ▁the ▁S nake , ▁when ▁it ▁er u pts ▁in ▁T eg an ▁yet ▁again . ▁The ▁Doctor , ▁T eg an , ▁Ny ss a ▁and ▁T url ough ▁search ▁for ▁a ▁c ure ▁on ▁Man uss a , ▁but ▁hundreds ▁of ▁years ▁in ▁its ▁past , ▁when ▁it ▁was ▁still ▁an ▁industrial ized ▁civil ization . ▁The ▁Mar a ▁moves ▁beyond ▁T eg an ▁and ▁finally ▁man ages ▁to ▁possess ▁both ▁Ny ss a