The Deep and Shining Dark

Magic within the city-state of Marek works without the need for bloodletting, unlike elsewhere in Teren, thanks to an agreement three hundred years ago between an angel and the founding fathers. It also ensures that political stability is protected from magical influence. Now, though, most sophisticates no longer even believe in magic or the city-angel.
But magic has suddenly stopped working, discovers Reb, one of the two sorcerers who survived a plague that wiped out virtually all of the rest. Soon she is forced to acknowledge that someone has deposed the city-angel without being able to replace it. Marcia, Heir to House Fereno, and one of the few in high society who is well-aware that magic still exists, stumbles across that same truth. But it is just one part of a much more ambitious plan to seize control of Marek.
Meanwhile, city Council members connive and conspire, unaware that they are being manipulated in a dangerous political game. A game that threatens the peace and security not just of the city, but all the states around the Oval Sea, including the shipboard traders of Salina upon whom Marek relies.
To stop the impending disaster, Reb and Marcia, despite their difference in status, must work together alongside the deposed city-angel and Jonas, a messenger from Salina. But first they must discover who is behind the plot, and each of them must try to decide who they can really trust.