Martin makes a deal with the Russians to rescue Kate. Gabi struggles to make a decision about her husband. In 2004, Dmitry asks one last favor of Terrance. In 1972, the last pieces of the puzzle to understanding Martin Odum's identity are revealed.

Martin finds out that Verax could be plotting an assassination. He is also kidnapped and makes a stunning discovery about his own identity.

Fallout from a shoot-out finds Martin taking Kyle Dobson into custody. Before long, Dobson's mysterious employers enlist hit men to retrieve a wounded Dobson, prompting Martin to plan a desperate escape with Dobson back to Los Angeles.

Martin manages to escape from an interrogation and finds out that Sonya and Aiden have been abducted. As he looks for them, he learns more information about his past.

Martin stays in legend as journalist Sebastian Egan to exonerate Hani Jabril and find the real assassins of Prince Abdullah. DCO is forced to pursue the investigation 'off book', ultimately leading Martin into his most dangerous stand off yet.

A threat on a summit is investigated by Martin and Nina, who search for Tamir's associate in present-day Prague. Elsewhere, two assassins spin a deadly plan into motion; Tamir's wife gives orders to Beslan; and Dmitry struggles to complete his mission.

Kate becomes a fugitive in modern-day Paris, so Martin puts her into hiding. Meanwhile, Ballard unearths information that could lead him to Martin, and Ilyana asks Dmitry for a dangerous favor in 2001 Prague.

Season 2 kicks off with Martin Odum hiding out in present-day London and searching for clues about his identity with help from a CIA agent (Kelly Overton). Elsewhere, an investigation is launched into a Russian gangster.

Martin, Crystal and Troy Buchannan go undercover when a chemistry teacher and his family are kidnapped. The case takes on urgency when it's feared the kidnappers will use the teacher to manufacture a deadly gas.

Martin races against time in a search for Kate in Paris. Meanwhile, Dmitry discovers a key to getting close to Doku Zakayev in 2001 Prague, and Ballard gets swept up in a life-changing incident in 1991 Lithuania.

Martin makes contact with a woman who may be linked to his past. Meanwhile, Dmitry embarks on a mission in 2001 Prague to find a wanted war criminal, yet concerns rise that Dmitry may be going too far with his infiltration techniques.

Martin is sold VX gas, resulting in the apprehension of the Colonel and Ana Paulanos. In response, one of the Colonel's minions releases VX on a crowded bus, and promises more attacks if the Colonel and Ana aren't released.