agues , ▁gets ▁shot ▁in ▁the ▁head ▁by ▁Do yle ▁while ▁visit ing ▁someone . ▁At ▁the ▁end ▁of ▁that ▁episode , ▁Pr ent iss ▁s ne aks ▁out ▁of ▁a ▁meeting ▁in ▁order ▁to ▁save ▁her ▁B AU ▁colle agues ▁from ▁Do yle . ▁ ▁At ▁the ▁beginning ▁of ▁" La uren ," ▁it ▁is ▁revealed ▁that ▁Pr ent iss ▁had ▁been ▁a ▁sp y ▁eight ▁years ▁previously , ▁on ▁a ▁task ▁force ▁profil ing ▁terror ists ; ▁while ▁under cover , ▁she ▁met ▁Ian ▁Do yle ▁( an ▁arms ▁deal er ) ▁and ▁became ▁his ▁lo ver . ▁Her ▁bet ray al ▁of ▁Do yle ▁led ▁to ▁his ▁arrest ▁and ▁subsequent ▁imprison ment , ▁including ▁time ▁in ▁a ▁North ▁Korean ▁prison . ▁Pr ent iss ▁tracks ▁down ▁Do yle ▁in ▁Boston ▁and ▁tries ▁to ▁kill ▁him , ▁but ▁he ▁takes ▁her ▁host age . ▁Later , ▁Ros si ▁realized ▁that ▁she ▁left ▁their ▁team ▁meeting ▁suddenly ▁in ▁order ▁to ▁protect ▁them ▁from ▁Do yle ▁as ▁it ▁was ▁Pr ent iss ▁that ▁Do yle ▁was ▁after . ▁Hot ch ▁says ▁they ▁will ▁treat ▁Do yle ▁as ▁an ▁un sub ▁and ▁Pr ent iss ▁as ▁his ▁victim , ▁and ▁profile ▁them ▁just ▁as ▁they ▁would ▁in ▁any ▁other ▁case . ▁ ▁They ▁eventually ▁track ▁them ▁down ▁to ▁an ▁abandoned ▁building ▁in ▁Boston ▁and ▁arrive ▁with ▁a ▁SW AT ▁team . ▁Pr ent iss ▁reve als ▁to ▁Do yle ▁that ▁his ▁son , ▁whom ▁Do yle ▁believed ▁had ▁been ▁killed , ▁is ▁actually ▁alive