▁of ▁his ▁wife , ▁Tr ud y , ▁led ▁him ▁to ▁develop ▁de pression , ▁ex ac erb ate ▁his ▁obs ess ive – comp uls ive ▁dis order ▁and ▁suffer ▁from ▁multiple ▁ph ob ias . ▁Now , ▁as ▁a ▁private ▁detect ive , ▁Mon k ▁investig ates ▁the ▁murder ▁of ▁N icole ▁Vas quez ▁( Mich elle ▁Add ison ). ▁Later , ▁a ▁shooting ▁occurs ▁during ▁a ▁campaign ▁r ally , ▁resulting ▁in ▁the ▁body guard ▁of ▁mayor al ▁candidate ▁Warren ▁St . ▁Cla ire ▁( Michael ▁Hog an ) ▁getting ▁killed . ▁The ▁inc umb ent ▁mayor ▁orders ▁Captain ▁St ott le me yer ▁( T ed ▁Lev ine ) ▁to ▁bring ▁Mon k ▁in ▁on ▁the ▁case , ▁and , ▁as ▁Mon k ' s ▁former ▁super visor , ▁rel uct antly , ▁he ▁does . ▁ ▁Mon k ▁meets ▁St . ▁Cla ire , ▁his ▁wife ▁Mir anda ▁( G ail ▁O ' Gr ady ), ▁and ▁their ▁ad visor ▁G av in ▁Lloyd ▁( Ben ▁Bass ), ▁and ▁wal ks ▁to ▁the ▁site ▁where ▁the ▁assass ination ▁attempt ▁occurred . ▁He ▁disco vers ▁Vas quez ▁was ▁a ▁volunte er ▁for ▁the ▁St . ▁Cla ire ' s ▁campaign . ▁When ▁he ▁goes ▁to ▁St . ▁Cla ire ▁campaign ▁headquarters ▁and ▁questions ▁a ▁volunte er ▁about ▁Vas quez , ▁that ▁volunte er ▁later ▁dies ▁under ▁susp icious ▁circumstances , ▁en han cing ▁Mon k ' s ▁susp icion ▁about ▁a ▁link ▁between ▁the ▁Vas quez ▁and ▁St .