▁Pat ink in ), ▁A aron ▁Hot ch ner ▁( Th omas ▁Gib son ), ▁Elle ▁Green away ▁( L ola ▁Gla ud ini ), ▁D erek ▁Morgan ▁( Sh em ar ▁Moore ), ▁Sp encer ▁Re id ▁( M att hew ▁Gray ▁G ub ler ), ▁Jenn ifer ▁" J J " ▁J are au ▁( A . ▁J . ▁Cook ), ▁and ▁Pen el ope ▁Gar cia ▁( K irst en ▁V angs ness ). ▁For ▁season ▁ 1 , ▁Gar cia ▁was ▁not ▁a ▁main ▁cast ▁member ▁but ▁rather ▁had ▁a ▁rec urr ing ▁role , ▁although ▁she ▁appeared ▁in ▁all ▁but ▁episode ▁five . ▁Gla ud ini ▁depart ed ▁the ▁series ▁in ▁season ▁ 2 ▁to ▁return ▁to ▁live ▁in ▁New ▁York ▁City ; ▁P aget ▁B rew ster ▁replaced ▁her ▁in ▁the ▁role ▁of ▁Em ily ▁Pr ent iss . ▁ ▁Pat ink in ▁depart ed ▁the ▁series ▁at ▁the ▁start ▁of ▁season ▁ 3 , ▁due ▁to ▁being ▁dist urbed ▁by ▁its ▁content . ▁Joe ▁M ante g na ▁replaced ▁him ▁as ▁David ▁Ros si , ▁a ▁best - s elling ▁author ▁and ▁F BI ▁agent ▁who ▁comes ▁out ▁of ▁ret irement . ▁During ▁this ▁season , ▁Cook ▁became ▁pre gn ant ▁with ▁her ▁first ▁child , ▁and ▁the ▁pre gn ancy ▁was ▁written ▁into ▁the ▁show . ▁Cook ▁was ▁on ▁mat ern ity ▁leave ▁for ▁part ▁of ▁season ▁ 4 ; ▁her ▁character ' s ▁void ▁was ▁tempor arily ▁replaced ▁by ▁Meta ▁Gold ing , ▁who