Equinox

Everyone is not as they seem in this fantasy novel, replete with war, witchcraft and secrets.
As evening falls, the city of Esteburg begins to stir. Christophor Morden, one of the king's special inspectorate, is woken early by a call to the city prison. A heinous crime has been committed and the police suspect supernatural causes.
The investigation will take Christophor far from home, to a village on the edge of the Kingdom. There he will discover the signs of an unholy ritual that can only be performed by a witch.
But within Christophor – as within all the citizens of Reikova – is a day brother: Alexsander, a musician who knows nothing of night. And as his night brother nears the truth, Alexsander will find himself determined to halt him.
And all the while, the witch's ancient and apocalyptic ritual comes ever closer to completion...