"[Six] years ago, terrorists hijacked a plane in Vienna. Somehow, a rescue attempt staged from the inside went terribly wrong and everyone on board was killed. Members of the CIA stationed in Vienna during that time were witness to this terrible tragedy, gathering intel from their sources during those tense hours, assimilating facts from the ground with a series of texts coming from one of their agents inside the plane. So when it all went wrong, the question had to be asked: had their agent been compromised, and how?"--