Lord of the Silent

I liked this book written by Elizabeth Peters. With son Ramses and his new wife Nefret, Amelia Peabody and her husband Radcliffe Emerson embark on a sea voyage in 1915 to Alexandria and ultimately arrive in Cairo for their annual excavations. But on this trip, the exotic, alluring city is not what it used to be. Cairo has been transformed into an armed camp teeming with enemy agents, and bold tomb robbers are desecrating ancient sites.

This is the 13th novel in the series. The title refers to Amon-Re, the ancient Egyptian sun god.