It seems at first like a simple, tragic story. Tyler Wingo, a teenage boy, learns the awful news that his father, a soldier, was killed in action in Afghanistan. Then the extraordinary happens: Tyler receives a communication from his father...after his supposed death. Tyler hires Sean and Michelle to solve the mystery surrounding his father. But their investigation quickly leads to deeper, more troubling questions. Could Tyler's father really still be alive? What was his true mission? Could Tyler be the next target?

Sean and Michelle soon realize that they've stumbled on to something bigger and more treacherous than anyone could have imagined. And as their hunt for the truth leads them relentlessly to the highest levels of power and to uncovering the most clandestine of secrets, Sean and Michelle are determined to help and protect Tyler--though they may pay for it with their lives.

一開始，只是個平凡、悲慘的故事……少年泰勒‧溫哥得知一項可怕的消息，他的軍人父親在阿富汗喪生了。但緊接著神奇的事發生了，泰勒收到來自爸爸的消息？！他不是已戰亡了嗎？泰勒僱請尚恩還有米雪兒一同解出圍繞父親的所有迷團。但調查卻很快地引出更深層、更令人不安的謎題。泰勒的父親是否還活著？而他真正的任務是什麼？泰勒是否會成為下個目標？

尚恩與米雪兒馬上瞭解，他們無意間碰觸了無比巨大的可怕陰謀。當他們一步步追尋真相，線索卻毫不留情地將他們引入權力及陰謀的核心，為了解開這秘中之密，尚恩和米雪兒已下定決心幫助及保護泰勒，即使他們可能賠上寶貴的生命！