The Samaritan's Secret (Omar Yussef Mysteries)

When Omar Yussef and his family arrive in Nablus for the wedding of a friend, police officer Sami Jaffari, trouble begins. An ancient sacred scroll has been stolen from the Samaritans, a tiny religious community that has lived in Nablus for millennia. Because he knows Omar Yussef is interested in history, Sami takes him along to investigate, but they find that scroll has been mysteriously returned.
Then the body of a young man is discovered on the peak of the mountain where the Samaritans believe their ancient temple stood. The dead man, it turns out, was not just any Samaritan. He worked for the former Palestinian president and controlled hundreds of millions of dollars of government money that is now missing. If the World Bank cannot locate the money within the next several days, all its aid money to the Palestinians will be cut off. The police are only willing to take their investigation of this dangerous case so far, but Omar Yussef is determined to solve the murder and locate the money. Unless he can find it in time, all Palestinians will suffer.