▁entire ▁trip , ▁the ▁normally - dis cipl ined ▁Grant ▁becomes ▁convinced ▁that ▁the ▁only ▁way ▁to ▁surv ive ▁is ▁to ▁kill ▁his ▁co - capt ain , ▁Mc Ne ill , ▁and ▁thus ▁slow ▁down ▁the ▁rate ▁of ▁o xygen ▁de ple tion . ▁His ▁attempt ▁fails , ▁however , ▁and ▁instead ▁Mc Ne ill ▁convin ces ▁him ▁to ▁kill ▁himself . ▁Ang us ▁Mc Ne ill ▁– ▁The ▁co - capt ain ▁of ▁the ▁Space ▁Queen . ▁Un like ▁his ▁colle ague , ▁Grant , ▁Mc Ne ill ▁is ▁a ▁h ed on ist , ▁and ▁when ▁the ▁ship ▁begins ▁to ▁lose ▁o xygen , ▁he ▁resol ves ▁to ▁make ▁the ▁best ▁of ▁a ▁bad ▁situation , ▁which ▁causes ▁Grant ▁to ▁eventually ▁try ▁and ▁kill ▁him . ▁When ▁the ▁attempt ▁fails , ▁Mc Ne ill ▁convin ces ▁Grant ▁to ▁play ▁a ▁game ▁of ▁cards ▁to ▁determine ▁which ▁of ▁them ▁will ▁commit ▁suic ide ▁so ▁that ▁the ▁other ▁might ▁live ▁long ▁enough ▁to ▁reach ▁their ▁destination , ▁and ▁he ▁ends ▁up ▁winning . ▁William ▁Ley land ▁– ▁An ▁agricult ural ▁expert ▁who ▁becomes ▁mixed ▁up ▁in ▁the ▁lun ar ▁drug ▁trade . ▁N arrow ly ▁surv ives ▁after ▁tra ff ick ers ▁sab ot age ▁his ▁transport ▁from ▁the ▁moon . ▁D are ▁Ch in ▁– ▁Ass istant ▁Mayor ▁of ▁Lab yr inth ▁City , ▁the ▁largest ▁settlement ▁on ▁Mars . ▁Kil led ▁during ▁the ▁pro log ue ▁for ▁Book ▁ 3 . ▁Dr . ▁D ew d ney ▁Mor eland ▁–