idence ▁suggests ▁it ▁might ▁have ▁been ▁Ron ▁Jones , ▁who ▁hel med ▁both ▁of ▁Martin ' s ▁other ▁scripts ▁for ▁the ▁series ). ▁ ▁In ▁ 1 9 8 8 , ▁Target ▁Books , ▁which ▁had ▁been ▁successfully ▁publishing ▁novel is ations ▁of ▁Doctor ▁Who ▁stories ▁for ▁many ▁years , ▁saw ▁itself ▁quickly ▁running ▁out ▁of ▁available ▁tele vised ▁material ▁( although ▁a ▁number ▁of ▁serial s ▁remained ▁un ada pt ed , ▁most ▁of ▁these ▁were ▁off - limits ▁due ▁to ▁lic ens ing ▁problems ). ▁While ▁negoti ations ▁went ▁forward ▁with ▁the ▁BBC ▁for ▁the ▁publication ▁of ▁all ▁new ▁advent ures , ▁the ▁decision ▁was ▁made ▁to ▁res ur rect ▁three ▁of ▁the ▁cancel led ▁scripts ▁and ▁publish ▁them ▁in ▁book ▁form . ▁The ▁writers ▁of ▁all ▁three ▁were ▁approached , ▁and ▁all ▁were ▁signed ▁on ▁to ▁write ▁the ▁nov els . ▁ ▁Notes ▁ ▁As ▁it ▁was ▁the ▁least ▁complete ▁of ▁the ▁three ▁scripts , ▁Mission ▁to ▁Magn us ▁required ▁a ▁great ▁deal ▁more ▁work ▁in ▁adapt ing ▁it ▁to ▁novel ▁form . ▁Martin ▁would ▁later ▁recall ▁that ▁everything ▁up ▁to ▁the ▁point ▁where ▁An zor ▁van ishes ▁from ▁the ▁story ▁was ▁more ▁or ▁less ▁script ed , ▁and ▁the ▁material ▁that ▁followed ▁that ▁had ▁only ▁been ▁story lined ▁at ▁the ▁point ▁the ▁series ▁was ▁rest ed . ▁One ▁thing ▁that ▁he ▁took ▁advantage ▁of ▁in ▁the ▁process ▁of ▁" fin ishing " ▁the ▁story ▁in ▁novel ▁form ▁was ▁to ▁include ▁a ▁reference ▁to ▁the ▁M ent or ▁K iv