由詹妮弗·加納領(lǐng)銜主演的雙面女間諜第四季是一部于評分7.0的美劇,于2005上映 　　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.