▁season ▁and ▁two ▁episodes ▁at ▁the ▁beginning ▁of ▁the ▁third . ▁As ▁W ong ▁puts ▁it ▁" They ▁asked ▁me ▁to ▁come ▁and ▁do ▁four ▁episodes ▁as ▁a ▁kind ▁of ▁aud ition , ▁to ▁see ▁if ▁it ▁worked , ▁and ▁after ▁those ▁four ▁episodes ▁they ▁asked ▁me ▁to ▁stay ▁on ." ▁W ong ▁cred ited ▁the ▁New ▁York - based ▁show ▁with ▁giving ▁him ▁the ▁opportunity ▁to ▁regularly ▁act ▁in ▁theatre . ▁ ▁Four ▁cast ▁members ▁of ▁SV U ▁who ▁would ▁rec ur ▁in ▁subsequent ▁years ▁first ▁appeared ▁in ▁the ▁third ▁season . ▁In ▁" Counter fe it ," ▁Robert ▁John ▁Bur ke ▁began ▁playing ▁NY PD ▁In ternal ▁Affairs ▁Serge ant ▁Ed ▁T ucker ▁when ▁it ▁is ▁believed ▁that ▁the ▁Special ▁Vict ims ▁Unit ▁has ▁been ▁guilty ▁of ▁mis con duct . ▁▁ ▁Peter ▁Hermann ▁first ▁played ▁Def ense ▁Att orney ▁Tre vor ▁Lang an ▁in ▁" Mon og amy ," ▁the ▁episode ▁on ▁which ▁Hermann ▁and ▁H arg it ay , ▁who ▁would ▁later ▁marry , ▁first ▁met . ▁The ▁show ▁later ▁hint ed ▁in ▁future ▁seasons ▁a ▁light ▁rom antic ▁fl ame ▁between ▁them . ▁In ▁" Sur ve ill ance ," ▁Jo el ▁de ▁la ▁Fu ente ▁first ▁appears ▁as ▁the ▁Techn ical ▁Ass istance ▁Response ▁Unit ▁anal yst ▁Rub en ▁Mor ales ; ▁at ▁aud itions ▁the ▁character ▁was ▁called ▁" B urt ▁Tre vor ," ▁but ▁this ▁name ▁was ▁given ▁to ▁a ▁different ▁techn ician . ▁Finally , ▁Jud ith ▁Light ▁joined ▁the ▁rec urr ing ▁cast