Scepter of Flint by N.L. Holmes

During the Great Jubilee of the Aten, a mysterious series of tomb robberies takes place, and witnesses begin to die. With plague ravaging the palace, where Hani’s daughter is a physician, and Egypt’s ally, Naharin, collapsing into the hands of a usurper, Hani must make sense of what is happening. And who in high places is his real enemy.