When a deeply embedded U.S. intelligence officer is detained in Hong Kong, Nikki insists on traveling there to bring him home but her cover is blown.

When a known smuggler is flagged at the New York border with unidentified cargo, Colin and Bill head upstate to track. To find this smuggler, they must enlist the help of a foreign intelligence officer looking to defect.

When a top-secret weapon is stolen from a U.S. defense contractor, CIA agent Colin Glass is paired with FBI agent Bill Goodman to investigate. Their partnership gets off to a rocky start, but they soon realize their opposing viewpoints may be their greatest asset.