eless ▁youth s . ▁After ▁getting ▁in , ▁Bla ke ▁confir ms ▁that ▁the ▁society ▁is ▁a ▁front ▁for ▁the ▁Free ▁Spirit , ▁the ▁cult ▁that ▁was ▁responsible ▁for ▁making ▁Spart a ▁more ▁than ▁human . ▁ ▁Volume ▁ 3 ▁– ▁H ide ▁& ▁Se ek ▁( first ▁published ▁in ▁ 1 9 8 9 , ▁based ▁on ▁the ▁ 1 9 4 9 ▁short ▁story ▁" H ide - and - Se ek ") ▁Spart a ▁and ▁Bla ke ▁are ▁deployed ▁to ▁Lab yr inth ▁City , ▁the ▁glass ▁col ony ▁on ▁Mars , ▁to ▁investigate ▁two ▁mur ders ▁that ▁may ▁be ▁connected ▁to ▁the ▁the ft ▁of ▁the ▁" Mart ian ▁pla que ", ▁an ▁artifact ▁that ▁proves ▁that ▁Mars ▁was ▁once ▁inhab ited . ▁ ▁The ▁pair ▁split ▁up , ▁with ▁Spart a ▁tail ing ▁one ▁suspect , ▁Dr . ▁K hal id ▁Say eed , ▁and ▁Bla ke ▁tail ing ▁the ▁other , ▁tr ucker ▁L yd ia ▁Z er om sky . ▁Things ▁do ▁not ▁go ▁as ▁planned , ▁however ; ▁Bla ke ' s ▁efforts ▁to ▁investigate ▁Z er om sky ▁soon ▁get ▁him ▁em bro iled ▁in ▁the ▁political ▁intr igue ▁of ▁the ▁local ▁un ions , ▁while ▁a ▁plane ▁ride ▁with ▁Dr . ▁Say eed ▁ends ▁with ▁an ▁explos ion ▁that ▁nearly ▁k ills ▁her . ▁ ▁A ▁third ▁murder ▁leads ▁them ▁both ▁to ▁the ▁real ▁cul prit , ▁an ▁assass in ▁h ired ▁by ▁the ▁Free ▁Spirit , ▁and ▁from ▁there , ▁Spart a