介绍：Having woken up in Hong Kong, with no memory for the last two years (!), Sydney returns to Los Angeles to try to piece together the last two years of her life and discovers the fates of her friends and family Vaughn has married thinking that Sydney was long dead; Marshall is having a baby with CIA tech expert Carrie Bowman; and Dixon is now the new division head of the L.A. office branch of the CIA. Sydney also learns the shocking fates of Jack and Sloane; the former is in CIA custody for communicating with Irina whom still is in hiding, while the latter is living in Switzerland under house arrest in exchange for co-operation with the CIA. Sydney is granted temporary CIA clearance on a case that may help her regain her memory and she meets a new enemy group called The Covenant.

介绍：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.'

介绍：在伦敦一个顶级五星级饭店，你只要拥有金钱便可以实现任何愿望在这个纸醉金迷的世界里，只要一晚，你的梦想便可以实现！英国绅士、淑女的别样生活将向你一一展示，他们的爱情，他们的家庭。揭示酒店浮华炫目外表背后的故事，带您深入了解酒店不为人知的员工文化。故事主角可能是酒店的门童，也许是酒吧经理，每个人背后都有一段精彩故事……　　Charlie introduces us to the world of Hotel Babylon - a world of fantasy and indulgence, where you can be whatever you want to be, provided you have the cash to pay for it. Charlie is interviewed by Rebecca for the job of Deputy Manager, but arch rival Anna emerges as a clever and formidable opponent. To prove his worth, Charlie must manipulate a world-famous rock band into spending as much money as possible - which is proving unusually tricky. A suspicious limo driver, Pete, adds to his worries, claiming to know Charlie - does he have something to conceal Meanwhile, Rebecca is mysteriously hiding out at the hotel and someone clearly has it in for her.