in ▁encounter . ▁The ▁two ▁be friend ▁each ▁other ▁due ▁to ▁their ▁shared ▁interest ▁and , ▁in ▁their ▁own ▁ways , ▁def y ▁family , ▁Hold ▁and ▁W ey r ▁to ▁maintain ▁their ▁friend ships ▁with ▁dol ph ins ▁and ▁conv ince ▁others ▁of ▁the ▁dol ph ins ' ▁intelligence ▁and ▁ability ▁to ▁speak . ▁While ▁familiar ▁characters ▁struggle ▁to ▁end ▁the ▁era ▁of ▁Thread , ▁Read is , ▁T ' l ion ▁and ▁others ▁struggle ▁to ▁begin ▁a ▁new ▁era ▁in ▁which ▁dol ph in ▁and ▁human ▁work ▁together ▁again . ▁ ▁Well - known ▁characters ▁from ▁previous ▁P ern ▁nov els ▁are ▁also ▁involved ▁in ▁the ▁plot , ▁including ▁B enden ▁W ey r le aders ▁L essa ▁and ▁F ' lar , ▁and ▁Master har pers ▁Rob inton ▁and ▁Men olly . ▁ ▁Notes ▁ ▁References ▁ ▁Cit ations   – ▁books ▁ ▁External ▁links ▁ ▁Category : 1 9 9 4 ▁nov els ▁Category : 1 9 9 4 ▁science ▁fiction ▁nov els ▁Category : Drag on rid ers ▁of ▁P ern ▁books ▁Category : Nov els ▁by ▁Anne ▁McC aff rey ▁Category : Del ▁Rey ▁books ▁Category : F iction ▁about ▁dol ph ins <0x0A> </s> ▁Geoff rey ▁de ▁Man dev ille ▁( d ied ▁c . ▁ 1 1 0 0 ), ▁also ▁known ▁as ▁de ▁Mag nav ille ▁( from ▁the ▁Latin ▁de ▁Mag na ▁Villa ▁" of ▁the ▁great ▁town "), ▁was ▁a ▁Const able ▁of ▁the ▁Tower ▁of ▁London . ▁Man dev ille ▁was