): ▁Rh etta ' s ▁husband ▁Ron nie ▁runs ▁the ▁family ▁farm . ▁Benjamin ▁Co ole y ▁( Mal col m ▁David ▁K elle y ): ▁Leon ▁Co ole y ' s ▁son , ▁Benjamin ▁makes ▁friends ▁with ▁Clay ▁through ▁the ▁Police ▁Ex pl or ers ▁program . ▁K endra ▁Bur ke ▁( Er in ▁C ah ill ): ▁But ch ' s ▁f iance e ▁starting ▁in ▁the ▁third ▁season , ▁K endra ▁is ▁an ▁Oklahoma ▁City ▁TV ▁news ▁rep orter . ▁Mar issa ▁Still water ▁( Cam ill ia ▁San es ): ▁Bobby ▁Still water ' s ▁wife . ▁Nell ▁Ada ▁( And rea ▁F ay ▁Fried man ): ▁But ch ' s ▁sister ▁Nell ▁has ▁Down ▁synd rome . ▁Em ily ▁Jane ▁Ada ▁( M ari ette ▁Hart ley ): ▁But ch ' s ▁mother , ▁who ▁is ▁aff lu ent ▁and ▁well - connected ▁with ▁the ▁rich ▁and ▁powerful . ▁L t . ▁Per cy ▁Y uk on ▁( R og er ▁A aron ▁Brown ): ▁L t . ▁Y uk on ▁was ▁the ▁original ▁super visor ▁of ▁Grace ' s ▁squad , ▁but ▁was ▁shot ▁to ▁death ▁by ▁his ▁brother ▁in ▁the ▁second ▁episode . ▁Ch et ▁( Art ▁Frank el ): ▁Grace ' s ▁elder ly ▁neighbor ▁was ▁often ▁a ▁fi xture ▁at ▁his ▁window ▁during ▁the ▁first ▁season , ▁seeing ▁Grace ▁n aked ▁on ▁a ▁regular ▁basis . ▁Pi ppa ▁( De L ane ▁Matt he ws ): ▁Pi ppa ▁is ▁a ▁street - walk ing