Sydneyfindsherselfface-to-facewithherlong-lostmother,IrinaDerevko,whoseintentionsforherdaughteraremadechillinglyclear.However,SydneymanagestoescapeandrejoinJackandWillintheirescapefromTaiwan.AfterarrivingbackinLosAngeles,SydneycontinueshersearchforVaughn,notknowingifheisdeadoraliveafterbeingsweptawaybyawallofwaterinTaipei.Will'slifeisforeverchangedwhenhelearnsthetruthaboutSD-6andSydney'slifeasadoubleagent.Also,DixonmustdecidewhetherornottoinformSloaneofSydney'ssuspiciousactivities.ButJackintervenesandcoversforSydneywholaterfindsVaughnwhohelpshertrytotrackdownhermotherIrinawho'ssearingforaRimbaldiartifactcalled'theBible.'导演采用平实的艺术表达。影像修复技术为历史研究提供支持，全彩处理让历史更加生动，画面呈现增强真实感。但技术使用保持克制，整体色调追求历史真实。整体场面注重人文意义。色彩运用体现严谨理念，声音设计追求内敛风格。