▁responsible ▁for ▁many ▁other ▁death s . ▁Kim ▁cannot ▁bring ▁this ▁case ▁to ▁court ▁since ▁the ▁stat ute ▁of ▁limitations ▁has ▁ended . ▁ ▁With ▁the ▁help ▁of ▁his ▁new ▁partner , ▁Jo , ▁Kim ▁start ▁investig ating ▁a ▁second ▁victim , ▁H w ang , ▁who ▁K ang ▁claims ▁he ▁killed ▁by ▁pushing ▁him ▁down ▁a ▁flight ▁of ▁st airs . ▁Kim ▁and ▁Jo ▁look ▁into ▁old ▁files ▁of ▁un sol ved ▁cases ▁and ▁find ▁one ▁matching ▁H w ang ' s ▁murder . ▁The ▁case ▁is ▁brought ▁to ▁trial ▁but ▁since ▁there ▁is ▁only ▁circumst ant ial ▁evidence , ▁K ang ▁is ▁not ▁conv icted ▁of ▁the ▁murder . ▁As ▁a ▁result , ▁Kim ▁is ▁dem oted ▁and ▁Jo ▁is ▁transferred ▁to ▁the ▁n arc ot ics ▁division . ▁ ▁While ▁clear ing ▁his ▁des k , ▁Kim ▁not ices ▁an ▁I UD ▁birth ▁control ▁impl ant ▁in ▁the ▁crime ▁scene ▁photo ▁of ▁the ▁un ident ified ▁remains . ▁He ▁then ▁gets ▁a ▁list ▁of ▁all ▁the ▁women ▁who ▁had ▁I UD ▁impl ants ▁around ▁the ▁time ▁of ▁the ▁murder ▁and ▁disco vers ▁one ▁reported ▁missing ▁woman , ▁Park ▁Mi ▁Y ong . ▁Kim ▁quickly ▁lear ns ▁that ▁Park ▁was ▁K ang ' s ▁girl friend ▁at ▁the ▁time . ▁She ▁came ▁to ▁the ▁city ▁with ▁her ▁young ▁son . ▁As ▁he ▁grew ▁older , ▁Park ▁realized ▁that ▁her ▁constant ▁fighting ▁with ▁K ang ▁was ▁not ▁health y ▁for ▁her ▁son . ▁She ▁tries ▁to ▁break ▁up ▁with ▁K ang ▁and