uma ▁after ▁being ▁shot ▁by ▁an ▁un sub ▁in ▁the ▁season ▁ 1 ▁finale ▁(" The ▁Fish er ▁King ▁( Part ▁ 1 ) "). ▁In ▁the ▁season ▁ 2 ▁premi ere ▁(" The ▁Fish er ▁King ▁( Part ▁ 2 ) "), ▁Elle ▁surv ives ▁and ▁returns ▁to ▁duty ▁sooner ▁than ▁SS A ▁Jason ▁G ide on ▁and ▁Unit ▁Chief ▁A aron ▁Hot ch ner ▁would ▁like . ▁Several ▁episodes ▁later , ▁while ▁alone ▁on ▁st ake out ▁of ▁a ▁sus pected ▁serial ▁rap ist , ▁she ▁mur ders ▁the ▁suspect ▁by ▁shooting ▁him ▁in ▁cold ▁blood ▁and ▁plant ing ▁her ▁gun ▁on ▁the ▁un ar med ▁victim . ▁The ▁local ▁police ▁de em ▁it ▁self - def ense , ▁but ▁Jason ▁and ▁A aron ▁question ▁her ▁ability ▁as ▁a ▁profil er ▁after ▁this . ▁Elle ▁res ign s , ▁turning ▁in ▁her ▁bad ge ▁and ▁gun ▁to ▁A aron , ▁declaring ▁that ▁it ▁is ▁" not ▁an ▁ad mission ▁of ▁gu ilt ". ▁ ▁D erek ▁Morgan ▁( Sh em ar ▁Moore ), ▁super vis ory ▁special ▁Agent ▁( se asons ▁ 1 – 1 1 ; ▁guest ▁star ▁seasons ▁ 1 2 – 1 3 ) ▁ ▁Morgan ▁is ▁a ▁confident , ▁assert ive , ▁and ▁often ▁hot - temper ed ▁character . ▁He ▁was ▁raised ▁by ▁his ▁mother , ▁Fran , ▁along ▁with ▁his ▁two ▁sister s , ▁Sarah ▁Morgan ▁and ▁Des ire e ▁Ben ita , ▁after ▁the ▁death ▁of ▁his ▁police ▁officer ▁father ▁right ▁in ▁front ▁of