▁Jam ie ▁are ▁attacked ▁by ▁a ▁Cy ber man , ▁which ▁st uns ▁them ▁with ▁electric ity ▁from ▁his ▁hand ▁and ▁leaves ▁with ▁another ▁patient ' s ▁body . ▁ ▁The ▁Gra v it ron ▁isn ' t ▁working ▁because ▁some ▁anten na e ▁on ▁the ▁Moon ' s ▁surface ▁are ▁broken . ▁Jules ▁and ▁Franz ▁go ▁out ▁to ▁fix ▁them ▁but ▁are ▁amb ushed ▁by ▁two ▁Cy ber men ▁and ▁be aten ▁to ▁death . ▁The ▁Doctor ▁can ' t ▁work ▁out ▁the ▁cause ▁of ▁the ▁disease ▁and ▁is ▁ordered ▁to ▁leave ▁by ▁Hob son . ▁Pol ly ▁makes ▁some ▁coffee ▁and ▁another ▁crew ▁member ▁gets ▁inf ected . ▁The ▁Doctor ▁works ▁out ▁that ▁the ▁ne uro t rop ic ▁virus ▁has ▁been ▁spread ▁through ▁inf ected ▁sugar ▁from ▁the ▁food ▁stores ▁and ▁is ▁an ▁organ ised ▁scheme ▁to ▁dest abil ise ▁the ▁crew . ▁A ▁Cy ber man ▁who ▁had ▁been ▁pos ing ▁as ▁a ▁patient ▁in ▁bed ▁reve als ▁himself ▁and ▁a ims ▁his ▁gun ▁at ▁them . ▁ ▁Another ▁Cy ber man ▁emer ges ▁and ▁k ills ▁Bob ▁when ▁he ▁tries ▁to ▁attack ▁the ▁other ▁with ▁a ▁metal ▁bar . ▁The ▁Cy ber men ▁recogn ise ▁the ▁Doctor ▁and ▁use ▁their ▁weapons ▁to ▁take ▁control ▁of ▁the ▁central ▁control ▁centre ▁of ▁the ▁Moon base ▁while ▁conf ining ▁Pol ly ▁and ▁Ben ▁to ▁the ▁sick bay . ▁The ▁Cy ber men ▁reve al ▁that ▁they ▁want ▁to ▁use ▁the ▁Gra v it ron ▁to ▁destroy ▁all ▁life ▁on ▁Earth ▁by