▁III ▁Super visor ▁employed ▁by ▁the ▁Las ▁Veg as ▁Police ▁Department . ▁He ▁appeared ▁in ▁ 1 9 8 ▁episodes , ▁and ▁was ▁succeeded ▁by ▁Raymond ▁Lang ston ▁( La ur ence ▁Fish bur ne ) ▁and , ▁later , ▁D . B . ▁Russell ▁( T ed ▁Dans on ). ▁ ▁App ear ances ▁ ▁Series ▁regular ▁ ▁Peters en ▁appeared ▁in ▁every ▁episode ▁of ▁the ▁series ' ▁first ▁eight ▁seasons , ▁with ▁the ▁exceptions ▁of : ▁▁ ▁Season ▁ 5 : ▁" Hol lywood ▁Br ass " ▁ ▁Season ▁ 6 : ▁" G um ▁Dro ps ," ▁" The ▁Un us ual ▁Sus pect " ▁ ▁Season ▁ 7 : ▁" S weet ▁Jane ," ▁" Red rum ," ▁" Me et ▁Market " ▁( B rie fly ), ▁Peters en ▁then ▁appeared ▁in ▁the ▁first ▁ten ▁episodes ▁of ▁the ▁nin th ▁season , ▁before ▁depart ing ▁the ▁main ▁cast . ▁ ▁Gu est ▁star ▁ ▁Following ▁his ▁departure ▁from ▁the ▁main ▁cast , ▁Peters en ▁repr ised ▁his ▁role ▁on ▁five ▁occasions . ▁▁ ▁Vo ice ▁ ▁Season ▁ 0 9 : ▁" Turn , ▁Turn , ▁Turn " ▁ ▁Season ▁ 1 3 : ▁" W ild ▁F lower ," ▁" D ead ▁Air " ▁ ▁On ▁Screen ▁ ▁Season ▁ 1 1 : ▁" The ▁Two ▁Mrs . ▁Gr iss oms " ▁ ▁Peters en ▁also ▁guest ▁star red ▁in ▁" Im mort ality ," ▁C SI ' s ▁feature - length ▁series ▁finale . ▁ ▁Cre