U.S. Marshall John Kruger erases the identities of people enrolled in the Witness Protection Program. His current assignment is to protect Lee Cullen, who's uncovered evidence that the weapons manufacturer she works for has been selling to terrorist groups. When Kruger discovers that there's a corrupt agent within the program, he must guard his own life while trying to protect Lee's.
In order to foil a terrorist plot, an FBI agent undergoes facial transplant surgery and assumes the identity of a criminal mastermind, who murdered his only son. The plan turns sour when the criminal wakes up prematurely and seeks revenge.
Oscar and Peter land a career-making opportunity when a Chicago tycoon chooses them to compete for the design of a cultural center. The tycoon mistakenly believes that Oscar is gay and has him spy on his mistress Amy. Oscar goes along with it and ends up falling in love with Amy.
A Muslim ambassador exiled from his homeland, Ahmad ibn Fadlan finds himself in the company of Vikings. While the behavior of the Norsemen initially offends ibn Fadlan, the more cultured outsider grows to respect the tough, if uncouth, warriors. During their travels together, ibn Fadlan and the Vikings get word of an evil presence closing in, and they must fight the frightening and formidable force, which was previously thought to exist only in legend.