A journalist is murdered in Jerusalem's Armenian Cathedral and Detective Arieh Ben-Roi is spoilt for leads. But one seems out of place - an apparent link to a decades-old missing persons case in Egypt. Baffled, Ben-Roi turns for help to his old friend and sparring partner, Inspector Yusuf Khalifa of the Luxor Police. Although struggling with personal tragedy and immersed in a case of his own - mysterious well poisonings in the Eastern Desert - Khalifa agrees to do some digging. What he discovers will change both men's lives for ever. As their investigations intertwine, the detectives are drawn ever deeper into a sinister web of violence, abuse, corporate malpractice and international terrorism. And at its heart lies a three thousand year-old mystery that has already taken two lives, and will soon be claiming more.