Ghosts of Karnak (A Ghost Novel), Paperback

Something's not right with the Ghost's friend Ginny... something happened to her in Cairo, out on the dig. Something that's related to a strange cult known as The Circle of Thoth, a baboon with a clockwork eye, dust devils on Fifth Avenue, robed assassins, sacrificial rites, a 'resurrection machine' and a ghostly figure clad in trailing bandages.