Buried deep under Istanbul, a secret is about to resurface with explosive consequences… Alex Zegliwski has been savagely beheaded. His body is found hidden near the sacred archaeological site of Hagia Sophia in Istanbul. When Sean arrives in the ancient city to identify his colleague's body, he is handed an envelope of photographs belonging to Alek and soon finds himself in grave danger. Someone wants him dead but why? Aided by British diplomat Isabel Sharp, Sean begins to unravel the mystery of the mosaics in the photographs and inch closer to snaring Alek's assassin. Evil is at work and when a lethal virus is unleashed on the city, panic spreads fast. Time is running out for Sean and Isabel. They must catch the killer before it's too late. An electrifying conspiracy thriller which will entice fans of Scott Mariani, Sam Bourne and Dan Brown.