▁S ara ▁makes ▁a ▁life - ch anging ▁decision ▁(" Good bye ▁and ▁Good ▁L uck "), ▁and ▁one ▁investig ator ▁falls ▁(" For ▁Ged da "), ▁in ▁the ▁e ighth ▁season ▁of ▁C SI . ▁Gr iss om , ▁Will ows ▁and ▁their ▁team ▁investigate ▁a ▁dec ap itation ▁(" A ▁La ▁Cart "), ▁a ▁demon ic ▁possession ▁(" Go ▁to ▁Hell "), ▁the ▁death ▁of ▁a ▁herm aph rod ite ▁(" The ▁Case ▁of ▁the ▁Cross - D ress ing ▁Car p "), ▁the ▁murder ▁of ▁a ▁slash er ▁actress ▁(" The ▁Ch ick ▁Ch op ▁F lick ▁Sh op "), ▁and ▁a ▁kid n apping ▁that ▁brings ▁New ▁York ' s ▁top ▁F BI ▁agent ▁to ▁Las ▁Veg as ▁(" Who ▁and ▁What "). ▁Meanwhile , ▁Catherine ▁finds ▁herself ▁affected ▁by ▁the ▁death ▁of ▁a ▁three - year ▁old ▁(" A ▁Th ous and ▁Days ▁on ▁Earth "), ▁and ▁the ▁death ▁of ▁a ▁difficult ▁TV ▁star ▁leads ▁Br ass ▁and ▁Gr iss om ▁to ▁Hollywood ▁(" Two ▁and ▁a ▁Half ▁Death s "). ▁ ▁Cast ▁ ▁Main ▁cast ▁▁ ▁William ▁Peters en ▁as ▁Gil ▁Gr iss om ▁ ▁Marg ▁Hel gen berger ▁as ▁Catherine ▁Will ows ▁ ▁Gary ▁D ourd an ▁as ▁W arr ick ▁Brown ▁ ▁George ▁E ads ▁as ▁Nick ▁Sto kes ▁ ▁J or ja ▁Fox ▁as ▁S ara ▁Sid le ▁ ▁Eric ▁Sz m anda ▁as ▁Greg ▁Sand ers ▁ ▁Robert ▁David ▁Hall ▁as ▁Al ▁Rob b ins ▁ ▁Wal lace ▁Lang ham ▁as ▁David ▁H