双面女间谍 第四季

五个月后。悉尼退出中情局，并加入黑色行动单位，称为“授权人员只有”迪克森一起，杰克，沃恩和......斯隆人有限免疫力协同操作的APO。与此同时，悉尼维滕贝格发现了真相危及她与杰克的关系，最终她显露可怕的真相，以沃恩：关于她的父亲已经伊琳娜杀害超过去年同期。

　　Five months later. Sydney quits the CIA and joins a Black Ops unit called "Authorized Personnel Only" alongside Dixon, Jack, Vaughn and... Sloane whom for limited immunity is co-operating with the APO. Meanwhile, the truth Sydney found out in Wittenberg endangers her relationship with Jack, and eventually she reveals the awful truth to Vaughn: about her father having Irina murdered over a year earlier.