Sydney finds herself face-to-face with her long-lost mother, Irina Derevko, whose intentions for her daughter are made chillingly clear. However, Sydney manages to escape and rejoin Jack and Will in their escape from Taiwan. After arriving back in Los Angeles, Sydney continues her search for Vaughn, not knowing if he is dead or alive after being swept away by a wall of water in Taipei. Will's life is forever changed when he learns the truth about SD-6 and Sydney's life as a double agent. Also, Dixon must decide whether or not to inform Sloane of Sydney's suspicious activities. But Jack intervenes and covers for Sydney who later finds Vaughn who helps her try to track down her mother Irina who's searing for a Rimbaldi artifact called 'the Bible.'
演员：索茜·贝肯 吴育刚 奥马尔·马卡迪 Shira Scott Astrof Rick Glassman Nanrisa Lee Matt Cordova 大卫·富特尼克 Sue Ann Pien Heather Adair Arthur Keng Melanie Herrera Jocelyn Marie Albert Rutecki