▁escape ▁of ▁Sh ell ▁and ▁Den ny ▁to ▁the ▁Costa ▁Del ▁Sol ▁in ▁Spain ▁getting ▁reven ge ▁on ▁Syl via ▁and ▁her ▁husband ▁along ▁the ▁way ; ▁Y v onne ' s ▁Top ▁Dog ▁status ▁being ▁challeng ed ▁by ▁Max i ▁Pur vis ▁( K er ry ▁N orton ), ▁the ▁head ▁of ▁the ▁" Pe ck ham ▁Boot ▁Gang "; ▁prison ▁officer ▁Di ▁B ark er ' s ▁( Trace y ▁Wil kin son ) ▁strugg les ▁as ▁a ▁home ▁car er ▁for ▁her ▁disabled ▁mother ▁and ▁an ▁up be at ▁finale ▁of ▁Helen ▁and ▁Nik ki ▁finally ▁comm itting ▁to ▁their ▁relationship ▁when ▁Nik ki ' s ▁appeal ▁is ▁successful ▁and ▁she ▁is ▁released ▁from ▁prison . ▁ ▁Series ▁ 4 ▁( 2 0 0 2 ) ▁ ▁Following ▁on ▁from ▁one ▁of ▁the ▁several ▁cl iff hang ers ▁from ▁series ▁three , ▁Y v onne ▁in ▁the ▁frame ▁for ▁Virginia ▁O ' K ane ' s ▁( K ate ▁O ' M ara ) ▁murder ▁there ▁is ▁a ▁game ▁of ▁cat ▁and ▁mouse ▁between ▁her ▁and ▁Fen ner ▁while ▁the ▁real ▁cul pr its ▁continue ▁their ▁reign ▁over ▁G - W ing . ▁But ▁it ' s ▁not ▁long ▁before ▁Y v onne ▁is ▁r uling ▁the ▁ro ost ▁again , ▁when ▁Den ny ▁returns ▁in ▁the ▁nick ▁of ▁time ▁and ▁a ids ▁Y v onne ▁in ▁her ▁bid ▁to ▁prove ▁her ▁innoc ence . ▁She ▁arriv es ▁with ▁Ro is in ▁Con nor ▁and ▁Cass ie ▁Ty ler ,