▁of ▁Mary - K ate ▁& ▁Ash ley " ▁followed ▁by ▁the ▁name ▁of ▁the ▁mystery . ▁▁ 1 . ▁The ▁Case ▁of ▁Th orn ▁M ansion ▁( 1 9 9 4 ) ▁A ▁g host ▁is ▁supposed ly ▁ha un ting ▁a ▁m ansion ▁in ▁Trans ylvan ia , ▁and ▁the ▁girls ▁must ▁figure ▁out ▁who ▁or ▁what ▁is ▁actually ▁behind ▁it . ▁The ▁" g host " ▁ends ▁up ▁being ▁the ▁care t aker ▁of ▁the ▁m ansion ▁who ▁is ▁also ▁a ▁be e keeper . ▁▁ 2 . ▁The ▁Case ▁of ▁the ▁Log ical ▁I ▁R anch ▁( 1 9 9 4 ) ▁P ung ent ▁sm ells ▁and ▁weird ▁no ises ▁pl ague ▁the ▁" Log ical ▁I ▁R anch ". ▁Some ▁employees ▁of ▁the ▁ran ch ▁think ▁it ▁is ▁being ▁caused ▁by ▁a ▁drag on ▁running ▁loose . ▁▁ 3 . ▁The ▁Case ▁of ▁the ▁Sea World ▁Advent ure ▁( 1 9 9 5 ) ▁The ▁girls ' ▁parents ▁work ▁at ▁Sea World ▁as ▁over - work ed ▁dol ph in ▁train ers . ▁One ▁day , ▁the ▁girls ▁run ▁into ▁a ▁dead ▁body ▁in ▁the ▁woods ▁that ▁eventually ▁leads ▁them ▁and ▁their ▁parents ▁to ▁a ▁cru ise ▁ship ▁while ▁trying ▁to ▁solve ▁the ▁rig ged ▁mystery . ▁The ▁b oss ▁of ▁the ▁girls ' ▁parents ▁had ▁plant ed ▁evidence ▁to ▁get ▁them ▁all ▁on ▁the ▁cru ise , ▁so ▁they ▁could ▁take ▁a ▁much - ne eded ▁family ▁vac ation . ▁▁ 4 . ▁The ▁Case ▁of