When former FBI agent William Harrison begins receiving mysterious postcards with the signature "Echo Tango," he's alerted to a deadly government cover-up beyond anything he ever thought possible. His informant turns out to be a guilt-ridden ex-operative in the Saint Mary Project, an ultra-secret program engaged in alien contact. The organization is wiping out loose ends, and Echo Tango thinks Harrison is the man he needs to stop the decades-old conspiracy. Thanks to a gunshot wound suffered in an attempt to thwart an armed robbery, the crime-fighting life is something of Harrison's past. He...