A mysterious exhibit is under construction at the Vatican Museums. The curator is murdered at a clandestine meeting on the outskirts of Rome a week before it opens. That same night, a violent break-in rocks the home of Greek Catholic priest Father Alex Andreou. When the papal police fail to identify a suspect in either crime, Father Alex decides that to find the killer he must reconstruct the secret of what a little-known, true-to-life fifth gospel known as the Diatessaron reveals about the church’s most controversial holy relic. But just as he begins to understand the truth about his friend’s death and its consequences for the future of the Christian church, Father Alex discovers a ruthless stalker is hunting him—an enemy with a vested stake in the exhibit that he must outwit to survive.


一場神祕的展覽在樊蒂岡博物館默默成形。館長卻在開館前一個禮拜的羅馬郊區參加神秘會議時遭謀殺，同天晚上希臘天主教 Alex Andreou 神父的家遭到暴力入侵。當教皇警方無法確認兩件案子的嫌疑犯， Alex Andreou 神父決定自己找出兇手，他必須重新建立第五福音，而第五福音揭開教堂裡最具有爭議性的神聖遺址。但就在他開始了解他朋友的死因及造成基督教教堂未來的後果， Alex 神父發現一位無情的跟蹤者正在追殺他，一位在新的展覽中取得利益的敵人，他必須以智取勝得以存活。