This season, Martin Odom seems to be on the run and hiding in present-day London to get away completely and the FBI wants him for a crime that he seems innocent. Martin apparently cannot remember his life before being injured in the Iraq war, as he is still searching for clues about his true identity with the help of CIA agent Nina Brenner.
The whole enterprise suddenly has the darker feel of a premium cable drama, if not-fully-realized one, as opposed to a rather tepid procedural with Bean as the identity-shifting spook.