The team travels to Cuba to catch a Serbian war criminal after a woman from Cabe's past pleads for his help; Alana De La Garza returns as the new head of Homeland Security; and Walter meets a new friend while completing court-mandated community service.moreless
A stranded Russian submarine in the Bering Sea, which was hacking into America's undersea cables, presents a delicate situation. Also, President Payton selects a new CIA director.
Annie works with a new ally after a surprising disclosure. Joan and McQuaid head out into the field.
Annie heads to Istanbul to find Belenko even as McQuaid's life hangs in the balance. Calder recruits a new asset in Sydney and Arthur assumes control at McQuaid Security.
Eight months after Dr. Rosen's startling announcement to the world about the existence of Alphas, the government has had him committed. His Alphas, which have gone their own ways, must decide whether to reunite and save their friend when Rosen is called in to deal with an Alpha prison break.moreless
Tony must recruit his friends in order to help find his missing sister, Eura.