A Swedish security agent is summoned to interrogate a terror suspect held by the FBI —but the prisoner isn't the only one with something to hide.

At a remote military base in the Indian Ocean, the FBI is trying to get a prisoner to confess. But the detainee, a suspect in an Islamist-inspired terror attack in the United States, refuses to talk.

Ernst Grip, a Swedish security officer, has no idea why he's been dispatched to New York City. The FBI agent he meets on arrival, Shauna Friedman, seems to know a little too much about him. And when he arrives at his real destination, the American authorities have just one question: Is their terror suspect a Swedish citizen?

In the process of uncovering the prisoner's true identity, Grip discovers the man's ties to a group of other suspects—a ruthless American arms dealer, a Czech hit man, a mysterious nurse from Kansas, and a heartbreakingly naive Pakistani. The closer Grip gets to the truth, the more complicated the deception becomes. Who is real and who is leading a double life?