NCIS: Season 5, Episode 8

5 - 8: Designated Target

Gibbs and his team investigate the assassination of a Navy Admiral and meet a woman whose search for her husband, a political refugee from Africa, is related to the case. It turns out that a death squad by an African dictatorship who fear that the missing husband (who they only have a vague description of) will return to lead the opposition in the country. They discover the identity of the assassin and arrest him before he can finish the job.