Sydneyfindsherselfface-to-facewithherlong-lostmother,IrinaDerevko,whoseintentionsforherdaughteraremadechillinglyclear.However,Sydneymanagestoesca eandrejoinJackandWillintheiresca efromTaiwan.AfterarrivingbackinLosAngeles,SydneycontinueshersearchforVaughn,notknowingifheisdeadoraliveafterbeingswe tawaybyawallofwaterinTai ei.Will’slifeisforeverchangedwhenhelearnsthetruthaboutSD-6andSydney’slifeasadoubleagent.Also,DixonmustdecidewhetherornottoinformSloaneofSydney’ssus iciousactivities.ButJackintervenesandcoversforSydneywholaterfindsVaughnwhohel shertrytotrackdownhermotherIrinawho’ssearingforaRimbaldiartifactcalled’theBible.