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 murd...

双面女间谍第四季是由肯·奥林,J·J·艾布拉姆斯执导，詹妮弗·加纳,朗·瑞弗金,迈克尔·瓦尔坦,卡尔·卢波利,格雷戈·格伦伯格,米娅·麦斯特罗,格雷戈·格伦伯格,维克多·加博主演的欧美剧，在2005年上映播出，第一影院提供了双面女间谍第四季在线观看，并且还可以支持手机看，不需要下载播放器,方便广大影迷。