A Free Agent is the 15th episode of Season 2 of Alias and the 37th episode overall. Sydney must make a life-defining decision regarding her future with CIA, while Sloane re-emerges and continues his obsessive quest to piece together the mysterious Rambaldi artifacts -- with the reluctant aid of a kidnapped scientist named Neil Caplan. Meanwhile, Dixon's marriage is put to the test after he tells his wife the truth about his occupation.