▁Ag ents ▁Simon ▁F oster ▁( Hen ry ▁Ian ▁C us ick ) ▁and ▁Henri etta ▁' E tta ' ▁Bishop ▁( Ge org ina ▁Ha ig ) ▁recover ▁the ▁body ▁of ▁Walter ▁Bishop ▁( John ▁No ble ), ▁Walter ▁having ▁purpose fully ▁enc ased ▁himself ▁and ▁his ▁team ▁in ▁am ber ▁shortly ▁after ▁the ▁Ob server ▁take over . ▁Though ▁they ▁are ▁able ▁to ▁release ▁him ▁from ▁the ▁am ber , ▁they ▁find ▁that ▁he ▁has ▁suffered ▁memory ▁damage ▁and ▁la cks ▁the ▁mental ▁capacity ▁to ▁build ▁a ▁strange ▁device ▁of ▁his ▁own ▁design . ▁Simon ▁and ▁E tta ▁talk ▁to ▁N ina ▁Sh arp ▁( B la ir ▁Brown ), ▁learning ▁that ▁Walter ▁had ▁William ▁Bell ▁remove ▁a ▁piece ▁of ▁his ▁brain ▁some ▁time ▁in ▁the ▁past , ▁which ▁she ▁post ul ates ▁could ▁be ▁used ▁to ▁he al ▁Walter ' s ▁brain ▁now . ▁However , ▁the ▁piece ▁is ▁still ▁in ▁storage ▁in ▁the ▁old ▁Mass ive ▁Dynamic ▁facility ▁on ▁the ▁main ▁island ▁of ▁New ▁York ▁City , ▁tight ly ▁controlled ▁by ▁Ob ser vers ▁who ▁can ▁read ▁their ▁thoughts , ▁making ▁its ▁recovery ▁difficult . ▁They ▁are ▁able ▁to ▁make ▁it ▁to ▁the ▁v ault ▁in ▁Mass ive ▁Dynamic , ▁in ▁part ▁due ▁to ▁the ▁in ability ▁of ▁the ▁Ob ser vers ▁to ▁read ▁E tta ' s ▁mind , ▁and ▁successfully ▁restore ▁Walter ' s ▁mem ories . ▁They ▁are , ▁however , ▁una ware ▁that ▁they ▁have ▁alert ed ▁Fr inge ▁division — st ill ▁led ▁by